Insulator Catalogs
All of these catalogs, either as original catalogs or Xerox copies of catalog pages, reside in the IRS (Insulator Research Service) files. Elton Gish maintains the IRS and is always looking for catalogs not on this list. Please contact me (elton @r-infinity.com) if you would like to share Xerox copies of your catalogs.
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
| Original | Company Name | Cat. No. | Year | Pages |
|---|---|---|---|---|
| A. B. Chance Co. | P-69 | 1970 | 36 | |
| A. B. Chance Co. | 1970 | 14 | ||
| O | A. B. Chance Co. | 1979 | ||
| A. B. Chance Co. | 1984 | 8 | ||
| O | A.J. Wilkinson & Co. Electrical Goods | 1891 | 81 | |
| Akron H-P | 1903 | 21 | ||
| Allgemeine Elektricitats-Gesellschaft (wooden, porcelain) | 1894 | 15 | ||
| American Automatic Electric Co. (U-188, WT, Armstrong, Hemingray, fireplug, knobs) | 6000 | ?? | ||
| American Jobbers Supply Co. (Thomas foreign, Illinois Elec) | 1925 | 7 | ||
| O | Baltimore Electrical Supply Co. | 960 | ||
| Baltimore Electrical Supply Co. (Brook, O-B, Pittsburg, SP) | 13 | |||
| O | Birnbach Radio Co., Inc. | 41 | ~1940 | 26 |
| O | Bissell (The F.) Co. (Hemingray, Lima, Locke glass, SP, cleats, P&S, tubes) | 1907 | 970 | |
| Brookfield (reprint of 1912 catalog) | 1974 | 126 | ||
| O | Buyers' Reference (Peru U-928B, Brunt, F. Locke) | 1899 | 101 | |
| O | C. S. Mersick & Co. (SP, Brookfield, nail-knobs, tubes, cleats, White strains) | 16E | 1916 | 711 |
| O | C. S. Mersick & Co. (nail knobs, tubes, SP, cleats, White strains, Hemingray) | 24E | 1924 | 391 |
| Canadian General Electric (Hemingray, Locke, Pitt.) | 3 | 1920-21 | 20 | |
| Canadian Porcelain Co. | c. 1925 | |||
| O | Canadian Porcelain Co. LTD. (pintypes, all kinds) | 401 | ??? | 118 |
| O | Canadian Porcelain Co. LTD. (pintypes, all kinds) | 407 | 1932 | 256 |
| O | Canadian Porcelain Co. LTD. (pintypes, all kinds) | 440 | 1940 | 195 |
| Central Electric Co. (Hemingray, Locke glass, SP by Thomas, P&S) | 1899 | 20 | ||
| Central Electric Co. (Brookfield, Hemingray, Locke glass/porc, Peru, SP, Bain break) | 1902 | 28 | ||
| Central Electric Co. (Brookfield, Knowles, Imp, SP, P&S, J-M) | 24 | 1906 | ||
| Central Electric Co. (Imp, SP, P&S, J-M) | 1906 | 20 | ||
| Central Electric Co. (SP, tubes, P&S, Brookfield, New Lexington) | 26 | 1909 | ||
| Central Electric Co. (SP, tubes, Hemingray, Pittsburg) | 28 | 1912 | ||
| Central Electric Co. (Hemingray, Pinco, Pierce, SP) | 40 | 1924 | 10 | |
| Chester, Charles T. (threadless glass, threaded, Cryolite, rubber, Brooks ramshorn) | 1873 | 3 | ||
| Cleveland Electrical Supply Co. (Hemingray, knobs, wood cleats, tubes) | 1905-06 | |||
| Continental Rubber Works | 4 | |||
| Cook Porcelain Insulator Co. | 1926 | 3 | ||
| O | Cook Porcelain Insulator Co. | 1929 | 37 | |
| Cook Porcelain Insulator Co. | 1929 | 5 | ||
| O | Corning Glass Works ("Pyrex Radio Insulators") | 1928 | 11 | |
| Corning Glass Works (radio insulators) | 1929 | 19 | ||
| O | Corning Glass Works (Suspension & strain ins.) | 1930 | 16 | |
| Corning Glass Works (pin types) | 1931 | 27 | ||
| O | Corning Glass Works ("Pyrex Radio Insulators") | 1934 | 11 | |
| O | Corning Glass Works (Pin type & suspension ins.) | 1938 | 48 | |
| Corning Glass Works (radio ins) -- 1994 Houston Nat. (mixture of pages) | ||||
| Crescent City Electric Co. (Hemingray, G.P. Co.) | G | c. 1925 | 3 | |
| Cutter (George) Co. (arc lamp hangers, etc.) | July 1900 | 16 | ||
| Davidson & Stevenson Porcelain Co. (SP, pintypes) | 1918 | 17 | ||
| Davidson Porcelain Co. (pintypes) | 1920's | 15 | ||
| Dexmar Minnesota Inc. (polycarbamate polymer) | 1990 | 4 | ||
| Edison General Electric Co. (wood cleat, rubber tube, hook, knob, glass pintype) | 11 | 1890 | 1 | |
| Edwin C. Lewis, Inc, (Thomas) | ?? | 11 | ||
| Electric Appliance Co. (Hemingray, floor, SP, cleat, Bain break, Victor split, tubes) | 12 | 1897 | 25 | |
| O | Electric Appliance Co. (Hemingray, SP) | 12 | 1897 | 567 |
| Electric Appliance Co. (O-B, Hemingray, SP) - 1903-1904 | 20 | 1903 | 8 | |
| Electric Appliance Co. (O-B, Hemingray, SP) - 1909-1910 | 30 | 1909 | 28 | |
| O | Electric Appliance Co. (SP, Odd, Hemingray, O-B, Brunt, P&S) | 30 | 1909-1910 | 974 |
| Electric Service Supplies Co. (M&E Co. glass pintype, glass mine and duplex Brown pony) | 1909 | |||
| O | Electric Service Supplies Co. (wire feeder, mine, knobs, cleats, tubes, M&E glass pintypes, pins, brackets, Paiste cutouts) | 4 | 1909 | 598 |
| Electric Service Supplies Co. (Locke) | 1923 | 26 | ||
| O | Electric Supply & Equipment Co. (mine, strains, SP, cleats, nail knobs, tubes, Triangle M, SP, Hemingray, Pittsburg, Fletcher wireholders) | 10 | c. 1915 | 776 |
| Electrical Supply Co. (Fluid, glass pintypes, Bain break, floor, Fletcher wireholder, glass knob, SP, battery, cleat) | 23 | 1892 | ||
| Electrose (bushings -- non-pintypes) | c. 1915 | 84 | ||
| Elliot-Lewis Electrical Co., Inc. (Findlay nail-knobs, GPCo SP and pintypes, tubes, Hemingray) | 10 | 1921 | 11 | |
| O | Federal Porcelain Co. | 1919 | 23 | |
| O | Fletcher Mfg. Co. (pins, brackets, wireholders, lamps) | 568 | 1922 | 82 |
| Florida Wire & Cable | 1990 | 9 | ||
| O | Fobes Supply Co. (tubes, cleats, nail knobs, SP, Westinghouse, Hemingray) | 21 | 1924 | 622 |
| O | Frank Ridlon Co. (Brodie tree, Hemingray, feeder wire, mica, Locke pin, floor tube, wood cleat, GE cleats and knobs, wall tubes, SP) | 1902 | 433 | |
| Franklin Porcelain Co. (Bulletin # 223) | 1928 | 13 | ||
| Gaskell & Grocott (British pin type, cleats) | 1912 | 7 | ||
| Gaskell & Grocott (British pin type, SP, cleats, tubes) | 1909 | 33 | ||
| Gate City Electric Co. (Bain CD 144, Bain break strain, SP, Victor split, Brodie, floor, hook, wood, Brodie) | 1891 | |||
| General Electric Co. (Brookfield) | 7503 | 1894 | ||
| General Electric Co. (cleat, knob, SP, P&S tubes, hook, Brookfield) | 7514 | 1897 | ||
| General Electric Co. (Star, SP, fuse cutout) | 1904 | 25 | ||
| O | General Electric | 1909 | 380 | |
| General Electric Co. (Star, SP, unipart) | 1909 | 4 | ||
| O | General Electric (Locke glass, Brookfield, Locke, nail-knob, cleat) | 4824 | 1911 | 400 |
| General Electric Co. (nail-knobs, Brookfield, Locke porcelain and glass) | 4824 | 1911 | 7 | |
| General Electric Co. (cleats, wood strain, guy strain, disk strain, Brookfield) | A4180 | 1913 | 13 | |
| General Electric Co. (Locke) | 1935 | 5 | ||
| O | General Electric (Power & Pole Line Equipment) | 1938 | 239 | |
| General Electric Co. (Hemingray, Locke, strains, odd) | 1951 | 11 | ||
| General Electric Co. (Locke) | 61 | 1961 | 12 | |
| General Porcelain Co. | 1 | 1923 | 5 | |
| O | George H. Buckminster Co. (tubes, nail knobs, cleates, Fletcher wireholders, Holmes tree, Pierce tree (U-187), Hemingray, Westinghouse) | 5 | 1924 | 288 |
| George Worthington (Hemingray, SP, cleat, Victor forestry, floor tube) | 1902 | |||
| O | George Worthington Co. (Thomas SP, Hemingray, tubes, cleats, Victor forestry, floor tube, Peru cutouts, pins, Cutter) | 1902 | 149 | |
| Gleason (E. P.) Mfg. Co. (SP, pigtail hook) | 1888 | |||
| Gleason (E. P.) Mfg. Co. (SP, tube) | 1902 | |||
| Graybar Electric Co. (Hemingray, Whitall Tatum) | 1934 | 2 | ||
| Graybar Electric Co. (Hemingray, Thomas, W-T (Armstrong) | 10-S | 1940 | 5 | |
| O | Graybar Electric Co. (Hemingray, Lowex, Armstrong, Thomas) | 102 | 1941 | 1072 |
| Graybar Electric Co. (Owens-Illinois, Hemingray, Armstrong) | 1948 | 3 | ||
| Graybar Electric Co. (odd, Knox, O-B, Hemingray, Arm, rubber) | 104 | 1952 | 17 | |
| Graybar Electric Co. (O-B, Hemingray, Armstrong, rubber) | 105 | 1958 | 18 | |
| Graybar Electric Co. (O-B, Hemingray) | 106 | 1967 | 7 | |
| O | Great Western Electric Supply Co. (Brookfield?, Bain, floor tubes, UPW SP, cleats, wood cleats, glass knobs | 1891 | 320 | |
| H.K. Porter (Delta Star) (manuf crossreference) | 1959 | 19 | ||
| O | Hartford Faience Co. | 1925 | 25 | |
| Hartford Faience Co. | 1927 | 4 | ||
| Hartford Faience Co. | 1930 | 13 | ||
| Havens Electric Co. (Hemingray) | M | 2 | ||
| Hemingray Glass Co. (missing pages 11-13, 21-29, 45-49, 75, 87, and even pages) | 1911 | |||
| Hemingray Glass Co. | 1 | 1921 | 32 | |
| Hemingray Glass Co. | 2 | 1922 | 4 | |
| Hemingray Glass Co. | D-1 | 1931-33 | 14 | |
| Hemingray Glass Co. | 1942 | 18 | ||
| Hemingray Glass Co. (good history of insulators) | 1946 | 24 | ||
| Hemingray Glass Co. | 1953 | 8 | ||
| Hemingray Glass Co. | 1953 | 2 | ||
| Hemingray Glass Co. (price list only) | 1956 | 1 | ||
| Hendrie & Bolthoff Mfg & Supply (SP, Hemingray, Locke) | 1945 | 17 | ||
| Hendrix Wire & Cable Corp. (polyethylene styles) | 1981-83 | 4 | ||
| O | Henrie & Bolthoff Mfg. And Supply Co. (pins, Peirec racks, tubes, SP, White strains, OB, Brookfield) | 60 | 1920 | 1014 |
| O | Henrie & Bolthoff Mfg. And Supply Co. (Locke, Hewlett, Joslyn) | 140 | 1936 | 592 |
| Hermsdorf Porcelain Factory (also see Northern Electric) | 1905 | 117 | ||
| O | Hubbard Co. (Manwaring U-189B, Pierce) | 24 | 1924 | 192 |
| O | Hubbard Co. | 28 | 1928 | 192 |
| O | Hubbard Co. | 1965 | 91 | |
| O | Illinois Electric Co. (Hemingray, SP, tubes, pins, brackets, Brunt SP, Peirce brackets) | 15 | 1903 | 172 |
| Illinois Electric Co. (tubes, Brunt SP, Duggan, P&S, fireplug, Hemingray, cutter, Thomas) | 1910 | |||
| O | Illinois Electric Co. (Hemingray, SP, tubes, Westinghouse) | 25 | 1919 | 1142 |
| Illinois Electric Co. (tubes, GPCo SP, nail-knob, pins, brackets, Hemingray, Westinghouse) | 26 | 1923 | 36 | |
| Illinois Electric Porcelain Co. | 1918 | 17 | ||
| Illinois Electric Porcelain Co. | 1923 | 17 | ||
| O | Illinois Electric Porcelain Co. (with price list) | 102 | 1926 | 64 |
| Illinois Electric Porcelain Co. (dry process styles only) | 103 | 1927 | ||
| O | Illinois Electric Porcelain Co. (with price list) | 104 | 1930 | 160 |
| O | Illinois Electric Porcelain Co. | DL-8 | 1954 | 47 |
| Illinois Electric Porcelain Co. | DL-8 | 1954 | 5 | |
| Illinois Electric Porcelain Co. | ?? | 1 | ||
| O | Illinois Electric Porcelain Co. (pintypes, standard, misc.) | 11 | 1921? | 32 |
| O | Iron City Electric Co. (Pittsburg, Thomas tubes and bushings, Hemingray, pins, Peirce brackets) | 4 | 1917 | 1220 |
| O | Isolanite Inc. (misc.) | Bul. 100-F | 1931 | 59 |
| I-T-E | 12.1-1A | 2 | ||
| I-T-E (marking codes) | 1971 | 20 | ||
| Jeffery-Dewitt | 4 | 1923 | 2 | |
| Jeffery-Dewitt | 4 | 1923 | 56 | |
| Jeffery-Dewitt | 5 | ?? | ||
| O | Jeffery-Dewitt | 10 | 1927 | 8 |
| Jeffery-Dewitt | 10 | 1927 | 4 | |
| Jeffery-Dewitt | 14 | 1928 | ||
| O | Jeffery-Dewitt | 14-A | 1929 | 32 |
| Jeffery-Dewitt | 14-A | 1929 | 8 | |
| O | Jeffery-Dewitt (unipart, susp. & post, susp.) | 14A, 15, 16 | 1929 | 108 |
| Jeffery-Dewitt | 1934 | 15 | ||
| O | Jeffery-Dewitt (pintype & pins) | sections 5-6 | 1934 | 13 |
| O | Jeffery-Dewitt (suspension & strain) | section 2 | 1934 | 61 |
| O | Jeffery-Dewitt (unipart, susp. & post, susp.) [loose pages] | 1938 | 50 | |
| Jeffery-Dewitt | 40 | 1940 | ||
| Jeffery-Dewitt | 40 | 1940 | 14 | |
| O | Jeffery-Dewitt (unipart, susp. & post, susp.) | 40 | 1940 | 96 |
| Jeffery-Dewitt | 500 | 1950 | 6 | |
| Jeffery-Dewitt | 1952 | 5 | ||
| O | Jeffery-Dewitt -- Suspension & Strain Ins. | 200 | c. 1941 | 34 |
| O | Jeffery-Dewitt -- Switch & Bus Ins. | 700 | c. 1941 | 27 |
| O | Jeffery-Dewitt (Price List for Bul. 200 thru 900) | 5-5-1941 | 30 | |
| Johns-Manville | 1894 | 3 | ||
| Johns-Manville (Thomas, glass) | 14 | 1905 | 38 | |
| Johns-Manville (Thomas, glass) | 15 | 1911 | 15 | |
| Joslyn Mfg. & Supply Co (Pinco, Ill., Hemingray) | 10 | 1926 | ||
| O | Joslyn Mfg. & Supply Co. (Pinco, Hemingray) | 10 | 1926 | 224 |
| O | Joslyn Mfg. & Supply Co. (Pinco, Hemingray) | 11 | 1934 | 221 |
| Joslyn Mfg. & Supply Co (Pinco, Ill., Hemingray, SP) | 12 | 1939 | 44 | |
| O | Joslyn Mfg. & Supply Co. (Pinco, Hemingray, Illinois, Triangle M) | 12 | 1939 | 248 |
| Joslyn Mfg. & Supply Co (Pinco & Hemingray) | 14 | 1941 | 2 | |
| Joslyn Mfg. & Supply Co. (Pinco) | 14 | 1941 | ||
| O | Joslyn Mfg. & Supply Co. (Pinco, Hemingray LOWEX) | 14 | 1941 | 262 |
| O | Joslyn Mfg. & Supply Co. (Pinco, Hemingray) | 15 | 1945 | 300 |
| Joslyn Mfg. & Supply Co (Pinco, Illinois & Hemingray) | 1950 | 15 | ||
| O | Joslyn Mfg. & Supply Co. (Pinco, Triangle M specialty, Hemingray) | 16 | 1950 | 340 |
| Joslyn Mfg. & Supply Co (Pinco & Hemingray) | 17 | 1954 | 13 | |
| Joslyn Mfg. & Supply Co (Pinco) | 1962 | 8 | ||
| Joslyn Mfg. & Supply Co (Pinco & Hemingray & wireholders) | 10-67 | 1967 | 7 | |
| Joslyn Mfg. & Supply Co (Unitary suspension ins.) | 302-69 | 1969 | 6 | |
| Joslyn Mfg. & Supply Co (Pinco) | 1970 | 5 | ||
| Joslyn Mfg. & Supply Co | 1983 | 9 | ||
| Joslyn Mfg. & Supply Co | 1986 | 7 | ||
| Joslyn Mfg. & Supply Co (Pinco & Hemingray) | 305-70 | 1968-72 | 10 | |
| Kellogg (Hemingray, porcelain) | 8 | 1928 | 1 | |
| Kellogg (Hemingray, PP, Rubber) | 1960's | 3 | ||
| O | Knowles | 1902 | 49 | |
| Knowles, C. S. (Imperial, New Lexington, Knowles Prism glass) | 51 | 1907 | 48 | |
| Knox | 3 | ?? | ||
| O | Knox Porc. Corp. | 3 | 88 | |
| Knox (neon signs) | 5 | ?? | 3 | |
| Knox | 6 | ?? | 3 | |
| Knox | 7 | 1938 | 1 | |
| Knox | 7 | 1938 | 9 | |
| O | Knox Porc. Corp. | 7 | 1938 | 72 |
| Knox | 9 | 1948 | 8 | |
| Knox | 10 | 1950 | 2 | |
| Knox | 10 | 1950 | 3 | |
| Knox | 11 | 1953 | 107 | |
| O | Knox Porc. Corp. (several sections in paper covered binder) | 11 | 1953 | |
| Knox | 11 | 1959 | 2 | |
| Knox | 11 | 1960 | 10 | |
| Knox | 11 | 1968 | 24 | |
| Knox (pintype & suspension) | 12 | 1971 | 16 | |
| L. G. Tillotson | 1883 | |||
| O | Lapp Insulator Co. | 1 | 1918 | 31 |
| Lapp Insulator Co. | 1 | 1918 | 5 | |
| Lapp Insulator Co. (leather bound) | 2 | 1920 | 32 | |
| O | Lapp Insulator Co. | 3 | 1923 | 35 |
| Lapp Insulator Co. | 3 | 1923 | 3 | |
| Lapp Insulator Co. | 3 | 1923 | 35 | |
| Lapp Insulator Co. (paste-up copy of 1920 cat. for printer) | 3 | 1923 | 34 | |
| Lapp Insulator Co. (plus "million lbs. on a teacup") | 3A | 1925 | 35 | |
| Lapp Insulator Co. (3A second edition) | 3A | 1926 | 35 | |
| O | Lapp Insulator Co. | 4 | 1928 | 96 |
| Lapp Insulator Co. | 4 | 1928 | 16 | |
| Lapp Insulator Co. | 4 | 1928 | 40 | |
| O | Lapp Insulator Co. | 5 | 1931 | 141 |
| Lapp Insulator Co. | 5 | 1931 | 12 | |
| Lapp Insulator Co. (radio insulators) | 110 | 1934 | 25 | |
| O | Lapp Insulator Co. | 6 | 1939 | 127 |
| Lapp Insulator Co. | 6 | 1939 | 4 | |
| O | Lapp Insulator Co. | 7 | 1948 | 125 |
| Lapp Insulator Co. | 7 | 1948 | 2 | |
| Lapp Insulator Co. (+ radio & bolt-end ins.) | 8 | 1953 | 29 | |
| O | Lapp Insulator Co. | 8 | 1959 | 167 |
| O | Lapp Insulator Co. (suspension ins.) | 9-B | 1970 | 49 |
| Lapp Insulator Co. | 10G | 1986 | 36 | |
| Lapp file drawings of insulators (with 1931/1934 catalog book) | 1927-35 | 7 | ||
| Latham (E. B.) & Co. (SP, tubes, Brookfield) | 34 | 1912 | 14 | |
| O | Lima Insulator Co. | 1 | 1904 | 32 |
| Line Material Co. (loop ins. & feeder cable ins.) | 1928 | 1 | ||
| O | Line Material | 1938 | ||
| Line Material Co. (L-M, Hemingray, wireholders) | 1958 | 14 | ||
| Locke Ins. Mfg. Co. | 3 | 1897 | ||
| Locke Ins. Mfg. Co. | 4 | 1899 | ||
| Locke Ins. Mfg. Co. | 4 | 1899 | ||
| O | Locke Ins. Mfg. Co. | 5 | 1900 | |
| Locke Ins. Mfg. Co. | 5 | 1900 | ||
| Locke Ins. Mfg. Co. | 5 | 1900 | ||
| O | Locke Ins. Mfg. Co. | 6 | 1902 | |
| Locke Ins. Mfg. Co. | 6 | 1902 | ||
| Locke Ins. Mfg. Co. | 6 | 1902 | ||
| O | Locke Ins. Mfg. Co. | 8 | 1904 | 56 |
| Locke Ins. Mfg. Co. | 8 | 1905 | ||
| Locke Ins. Mfg. Co. (Supp. No. 1) | 8 | 1905 | 2 | |
| Locke Ins. Mfg. Co. | 9 | 1906 | 2 | |
| O | Locke Ins. Mfg. Co. | 9 | 1907 | 59 |
| O | Locke Ins. Mfg. Co. | 1910 | 90 | |
| Locke Ins. Mfg. Co. | 1913 | |||
| Locke Ins. Mfg. Co. | 1913 | 200+ | ||
| O | Locke Ins. Mfg. Co. | 1916 | 184 | |
| Locke Ins. Mfg. Co. | 1916 | |||
| Locke Ins. Mfg. Co. | 1919 | 2 | ||
| Locke Ins. Mfg. Co. | 1919 | 136 | ||
| O | Locke Ins. Corp. (pin type ins.) | 25 | 1923 | 19 |
| O | Locke Ins. Corp. (suspension & hardware) | 25 | 1923 | 54 |
| Locke Ins. Mfg. Co. | 25 | 1923 | 1 | |
| O | Locke Ins. Corp. | 25 | 1925 | 253 |
| Locke Ins. Mfg. Co. | 25 | 1925 | ||
| O | Locke Ins. Corp. | 27 | 1927 | 309 |
| O | Locke Ins. Corp. (added drawings, notes, Locke Sign ) | 27 | 1927 | 309 |
| Locke Ins. Mfg. Co. | 27 | 1927 | ||
| Locke Ins. Mfg. Co. | 27 | 1927 | 52 | |
| O | Locke Ins. Corp. ("The Locke Sign" -- multiparts only) | c. 1929 | 16 | |
| O | Locke Ins. Corp. ("The Locke Sign" -- suspensions only) | c. 1930 | 20 | |
| O | Locke Ins. Corp. | 32 | 1932 | 320 |
| O | Locke Ins. Corp. (lots of added drawings, RFI article) | 32 | 1932 | 320 |
| O | Locke Ins. Corp. -- "Locke Hi-Top One-Piece Insulator" | 1933 | 4 | |
| Locke Ins. Mfg. Co. | 1933 | |||
| O | Locke Ins. Corp. "Switch & Bus Insulators" | 1934 | 27 | |
| O | Locke Ins. Corp. (Seyler hardware) | 36 | 1936 | 224 |
| O | Locke Ins. Corp. (loose leaf hard cover) | 1939-1943 | ||
| O | Locke Ins. Corp. (loose leaf hard cover) [few additional pages] | 1939-1943 | ||
| O | Locke Ins. Corp. (Radio Insulators) | c. 1945 | 28 | |
| Locke (G-E) (Hemingray - Manuf. crossreference) | 1945 | 20 | ||
| O | Locke Incorporated -- RM Handylog (pintypes, susp, etc.) | 1949 | 99 | |
| O | Locke Ins. Mfg. Co. | 55 | 1955 | 233 |
| Locke - NGK (cap & pin ins.) | 871 | ?? | 12 | |
| Locke - NGK (suspension ins.) | 861 | ?? | 18 | |
| O | Locke Ins. Corp. (Modern Radio Broadcasting Insulators) | ??? | 22 | |
| Manhattan Elec. Supply Co. (rubber, hook, SP, Victor split, Brookfield?) | 6 | 1896 | ||
| Manhattan Elec. Supply Co. (rubber, hook, cleat, tubes, SP, Victor split, floor, Brookfield?, Brown pony) | 10 | 1898 | ||
| Manhattan Elec. Supply Co. (Brookfield, Imp, SP, cleat, wooden) | c. 1902 | |||
| O | Manhattan Electrical Supply Co. (feeder wire, Brookfield, Pittsburg, SP, cleats, nail knobs, tubes) | 13 | 896 | |
| O | Manhattan Electrical Supply Co. (Brookfield, SP, cleats, tubes, duplex pins) | 16 | 1910 | 80 |
| Manhattan Elec. Supply Co. (Brookfield, Locke, Imperial, SP, cleat, tubes, wooden) | 21 | 1905 | ||
| Manhattan Elec. Supply Co. (Imp, SP, cleat) | 25 | ?? | ||
| McCarthy Bros. & Ford (SP, Hemingray, West.) | 1920 | 10 | ||
| McGraw-Edison | 1968-70 | 4 | ||
| O | McGraw-Hill Electrical Trade Catalog (dozens of companies) | 1927-28 | 370 | |
| O | Metropolitan Electrical Supply Co. | c. 1890's | 32 | |
| Mid-West Electric Co. (Hemingray, Thomas, SP, Cutter) | 18 | 1918 | 15 | |
| O | Mid-West Electric Co. (SP, Hemingray, Thomas?) | 18 | 1918 | 736 |
| Mine and Smelter Supply Co. (SP, Fireplugs, West, Hemingray,) | 56 | 1919 | 16 | |
| Montana Electric Co. (Thomas, SP, P&S) | 1912 | |||
| Morley Brothers Electrical Supplies (Hemingray) | 1 | 1920 | 5 | |
| O | National Metal Molding Co. (National wireholders, racks, brackets) | 18-007 | 1927 | 24 |
| New Haven Porcelain Co. (superior porcelain) | 1972 | 17 | ||
| New Lexington | 1908 | |||
| Newark Electrical Supply Co. (tubes, SP, nail-knobs, Brookfield, Thomas) | 19 | 1919 | 8 | |
| Newell Porcelain Co., Inc. | 1990 | 14 | ||
| O | NGK (Nippon Gaishi Kaisha) Ltd. | 1956 | 234 | |
| NGK Insulators, LTD | 15 | 1971 | 14 | |
| NGK Insulators, LTD | 15C | ?? | 18 | |
| O | Northern Electric Co. (Brookfield, Thomas, suspension, Holmes tree, Electrose, SP, cleats, wall tubes, pins, Electrose, Fletcher wireholders, nail knobs, strains, mine) | 3 | 1917 | 1461 |
| Northern Electric (Brook, Holmes tree, Thomas) | 3 | 1917 | 35 | |
| Northern Electric (Hemingray, Dominion, Hermsdorf, Thomas) | ?? | 5 | ||
| O | Northwestern Electric Equip. Co. (SP, fireplugs, tubes, cleats, Hemingray, Westinghouse, White strain, Holmes tree, nail knobs) | 16 | 1915-16 | 1304 |
| O | NW General Electric Supply Co. (Hemingray, Locke, Macomb, SP) | 29 | 1928 | 370 |
| Ohio Brass (Electric Railway Supplies) -- Hemingray | 4 | 1899 | 245 | |
| Ohio Brass (Elect. Rwy, Lt & Pwr) -- Hemingray | 6 | 1903 | 7 | |
| Ohio Brass - October | 1 | 1907 | 64 | |
| Ohio Brass (Elec Rwy & Mine Supplies) - (Hemingray) | 7 | 1907 | 553 | |
| Ohio Brass (Elect Railway) - Oct. (odd strain) (supp to #7) | 7 | 1908 | 4 | |
| Ohio Brass (H-T Porcelain Insulators) - Jan. | 2 | 1909 | 102 | |
| Ohio Brass (Elec Rrwys, Mine, Trans.) - June (porc & Hemingray) | 9 | 1910 | 218 | |
| Ohio Brass (H-T Porcelain Insulators) - July | 10 | 1910 | 120 | |
| O | Ohio Brass Co. (April - Elec., Rail & Mine) - (Hemingray) | 8 | 1910 | 297 |
| O | Ohio Brass Co. (Elect. Railway and Mine) July 1910) | 10 | 1910 | 120 |
| Ohio Brass (Supplement No. 2) - July | 1911 | 91 | ||
| Ohio Brass | 12 | 1912 | 9 | |
| Ohio Brass (Elect Rwy, Mine & Trans) | 12 | 1912 | 2 | |
| O | Ohio Brass Co. (Hemingray) | 12 | 1912 | 487 |
| Ohio Brass (Elec Rwy Mine Haulage & Trans. Lines)- Hemingray | 14 | 1914 | 606 | |
| Ohio Brass | 16 | 1916 | 93 | |
| O | Ohio Brass Co. (Hemingray) | 16 | 1916 | 654 |
| Ohio Brass | 17 | 1919 | 106 | |
| Ohio Brass (Insulator Section) | 17 | 1919 | 10 | |
| Ohio Brass (porc, Hemingray) | 17 | 1919 | 66 | |
| O | Ohio Brass Co. (Hemingray) | 17 | 1919 | 671 |
| O | Ohio Brass Co. (Hemingray) | 18 | 1921 | 638 |
| O | Ohio Brass Co. (Ins. section) - (Hemingray) | 19 | 1924-25 | 340 |
| Ohio Brass | 19 | 1925 | 13 | |
| O | Ohio Brass Co. (Hemingray) | 20 | 1926-27 | 916 |
| Ohio Brass | 20 | 1926-27 | 3 | |
| O | Ohio Brass Co. | 21 | 1934 | 422 |
| O | Ohio Brass Co. (Ins. section) | 21 | 1934 | 182 |
| O | Ohio Brass Co. (switch & bus ins.) | Bul. 607H | 1934 | 24 |
| O | Ohio Brass Co. (all kinds) [small 2-ring notebook] | 1935-1939 | ||
| Ohio Brass (Mining & Industrial) | 22 | 1939 | 50 | |
| Ohio Brass (control gaps) | 24 | 1940 | 102 | |
| O | Ohio Brass Co. | 24 | 1940 | 159 |
| O | Ohio Brass Co. | 26 | 1947 | 160 |
| Ohio Brass (Mining and Industrial) | 27 | 1949 | 6 | |
| Ohio Brass | 28 | 1953 | 25 | |
| O | Ohio Brass Co. | 28 | 1953 | 167 |
| O | Ohio Brass Co. | 53 | 1967 | 58 |
| O | Ohio Brass Co. | 60 | 1970 | 59 |
| Ohio Brass | 1973 | 10 | ||
| O | Ohio Brass Co. (Hi-Lite plastic rod ins.) | Pub. 2554-H | 1976 | 28 |
| Owens-Illinois Glass Co. (LOWEX) | 1940 | 7 | ||
| Pacific States Elec. Co. (Locke, SP) | 26 | 1921 | 14 | |
| O | Pacific States Electric Co. (Locke, Hemingray) | 26 | 1918-1922 | 472 |
| Parker | 1915 | |||
| Parker | 1915 | 11 | ||
| Pass & Seymour | July 1, 1892 | 31 | ||
| Pass & Seymour | Nov. 16, 1892 | 31 | ||
| O | Pass & Seymour | 1899 | 59 | |
| O | Pass & Seymour | 1900 | 63 | |
| O | Pass & Seymour | 1911 | 70 | |
| Pettingell Andrews (Brookfield, Locke, misc) | 14 | 1910 | 28 | |
| Pettingell Andrews (Brookfield, Locke, misc) | 14 | 1910 | 43 | |
| O | Pettingell Andrews (cleats, nail knobs, split knobs, wall tubes, SP, P&S, railway, Locke pins, Locke glass, Locke porc., Brookfield, Brodie and Holmes tree ins. | 14 | 1910 | 723 |
| Pettingell Andrews (Brookfield, Locke, misc) | 15 | 1914 | 67 | |
| O | Pettingell Andrews | 22 | 1922 | 720 |
| Pettingell Andrews | 22 | 1922 | ||
| Pettingell Andrews (Lynchburg, Illinois, Pinco, misc) | 25 | 1924 | 23 | |
| O | Pinco | 1 | 1921 | 22 |
| Pinco | 1 | 1921 | ||
| O | Pinco | 3 | 1922 | 49 |
| Pinco | 3 | 1922 | ||
| O | Pinco | 4 | 1926 | 82 |
| Pinco | 4 | 1926 | ||
| O | Pinco (2 suspensions & hardware) | Supp. #1 | 1927 | 16 |
| Pinco | 5 | 1936 | ||
| O | Pinco (4 sections: General, Suspension, Pin Type, S & B) | 1936 | 174 | |
| O | Pinco (The Hi-Line Hand Book) - suspensions | c. 1936 | 32 | |
| Pinco | 1941 | 28 | ||
| O | Pinco | 49 | 1949 | 152 |
| Pinco | 49 | 1949 | 31 | |
| O | Pinco | 301-62 | 1962 | 63 |
| Pittsburg | 1908 ? | 16 | ||
| Pittsburg | 2 | ?? | 81 | |
| Pittsburg | 3 | ?? | ||
| O | Pittsburg (all kinds plus 5-PART multi!) | Export Cat. No. 20 | c. 1920 | 240 |
| Porcelain Products, Inc. | 1 | 1930 | 6 | |
| Porcelain Products, Inc. | 1 | 1930 | ||
| O | Porcelain Products, Inc. (Pin types, susp., misc.) | 1 | 1930 | 62 |
| Porcelain Products, Inc. | 2 | 1931 | ||
| O | Porcelain Products, Inc. (specialty, bathroom) | 2 | 1931 | 25 |
| O | Porcelain Products, Inc. (Distribution Cutouts) | c. 1931 | 16 | |
| O | Porcelain Products, Inc. (neon signs) --- Bulletin No. 27 | c. 1931 | 8 | |
| O | Porcelain Products, Inc. (radio antenna) --- Bulletin No. 21 | c. 1931 | 5 | |
| Porcelain Products, Inc. | 10 | 1937 | ||
| Porcelain Products, Inc. | 1937 | 31 | ||
| O | Porcelain Products, Inc. | 53 | 1953 | |
| Porcelain Products, Inc. | 1953 | 6 | ||
| Porcelain Products, Inc. (pintypes & suspension) | 1976 | 7 | ||
| Porcelain Products, Inc. (pintypes & suspension) | 1982 | 8 | ||
| Porcelain Products, Inc. (pintypes & suspension) | 1986 | 8 | ||
| Porcelain Products, Inc. (pintypes & suspension) | 1992 | 8 | ||
| Reliance Comm/Tec (plastic) | 1981 | 7 | ||
| Siemens Brothers & Co. (British porc., iron clad) | 11 | 1910 | 22 | |
| O | Standard Electrical Supply Co. (Brookfield, Imperial, SP, tubes, cleats, wood) | 1905 | 686 | |
| Steiner Electric Co. (Hemingray, Armstrong, Electrose) | 1942 | 4 | ||
| Stewart (Frank H.) Electric Co. (Brunt SP, strain, Cutter, Duggan cleats, pins. Brookfield, Locke glass, Thomas) | 16 | 1909 | 36 | |
| Stewart (Frank H.) Electric Co. (Thomas SP) | 22 | 1919 | 2 | |
| Stuart-Howland (GE, Brookfield, Thomas, Brunt) | 1907 | |||
| Stuart-Howland (Pittsburg, Thomas) | 7 | 1912 | ||
| O | Superior Porcelain (knobs, cleats, spools, wireholders) | 1949 | 18 | |
| Superior Porcelain (old New Haven Porc.) | 1972 | 17 | ||
| T. C. White Co. | 24 | |||
| Taylor Goodhue & Ames (Brookfield, knobs, cleats) | 1893 | 12 | ||
| O | Thomas | 1904 | 20 | |
| Thomas | 1904 | |||
| Thomas | 1904 | 22 | ||
| Thomas | 1907 | |||
| Thomas ("Standard Porcelains", dry process pin types) | circa 1910's | 48 | ||
| Thomas | 12 | 1912 | ||
| O | Thomas | 1915 | 39 | |
| O | Thomas | 1920 | 144 | |
| Thomas | 19 | 1920 | ||
| O | Thomas - Insulator Pins & Cross Arms | D-28 | 1928 | 37 |
| O | Thomas - Suspension Ins & Hardware | 1928 | 112 | |
| O | Thomas | 1930 | 463 | |
| Thomas | 30 | 1930 | ||
| Thomas | 30 | 1930 | 10 | |
| O | Thomas - Pedestal Ins. for Switch & Bus Supports | 1937 | 13 | |
| O | Thomas - Pin Type Insulators | 1928 | 64 | |
| O | Thomas - Standard Electrical Porcelain (before E. Liverpool closed in 1927) | 1920's | 30 | |
| O | Thomas - Supplementary Catalog (to 1930 catalog), Lisbon | 1934 | 50+ | |
| O | Thomas (several sections in metal ring binder) | 40 | 1940 | 117 |
| O | Thomas EEI-NEMA Standards (Pintypes, susp, etc.) | 1956 | 8 | |
| Tower-Binford Electric & Mfg. Co. | 17 | 1916 | 55 | |
| Union Electric Co. (Hemingray, Lapp, SP, cleats, battery, J-M) | 9 | 1920 | 34 | |
| Varney Electrical Supply Co. (Hemingray) | 1913 | 1 | ||
| Victor (I-T-E) (fogbowl suspension & other fog types) | 101 | 1956 | 4 | |
| Victor (I-T-E) (manuf. crossreference) | 56 | 1956 | 23 | |
| O | Victor Insulators, Inc. | 1935 | 70 | |
| O | Victor Insulators, Inc. | 1937 | 17 | |
| O | Victor Insulators, Inc. | 1939 | 18 | |
| Victor Insulators, Inc. | 1941 | 4 | ||
| O | Victor Insulators, Inc. | 1950 | ||
| Victor Insulators, Inc. (fogbowl, pin post, post) | 40R | 1985 | 11 | |
| O | Victor Insulators, Inc. (switch & bus insulators) | V300 | 1991 | 47 |
| O | Victor Insulators, Inc. (transmission & distribution insulators) | V200 | 1991 | 23 |
| O | Victor Insulators, Inc. -- Kiln No. 3 | ??? | 12 | |
| Victor Insulators, Inc. (Bulletin #4) | ?? | 4 | ||
| Victor Insulators, Inc. (Bulletin #8.1.1-1C) | ?? | 20 | ||
| W. G. Nagel Electric Co. (N-L "crown" ins., Hemingray, SP) | 1916 | 8 | ||
| Walker & Kepler (SP, cleats, tubes, odd, Spanish slot-top) | 1894 | 20 | ||
| Western Electric (Locke, Hemingray, Brookfield, Locke glass, Peru, SP, P&S, wood cleats) | 1901 | 50 | ||
| Western Electric (Locke, Hemingray, Brookfield, Locke glass, SP, P&S) | 1901 | 18 | ||
| O | Western Electric, Standard Porcelain only | 1901 | 56 | |
| Western Electric (Thomas, Brookfield, Hemingray, Locke glass, SP, P&S) | 1904 | |||
| Western Electric (Brookfield, Hemingray, Locke, Thomas, SP) | 1904-05 | |||
| Western Electric (Thomas, Brook., Hemingray, Locke glass, GE, SP, P&S) | 1908-09 | 41 | ||
| Western Electric (Thomas, Brook., Hemingray, Locke glass, GE, SP, P&S) | 1908-09 | |||
| O | Western Electric (SP, Odd, Electr, Thomas, Hemingray, Brook) | 1915 | 1216 | |
| Western Electric (Thomas) | 1915 | |||
| O | Western Electric (SP, Odd, Electr, Thomas, Hemingray, Brook) | 1917 | 1312 | |
| Western Electric (Thomas, Hemingray, Brook, SP) | 1917 | 19 | ||
| Western Electric (Thomas) | before=> | 1918 | ||
| Western Electric (Thomas, Hemingray, Brookfield, SP, Electrose) | 1918 | |||
| Western Electric (Thomas) | 1919 | |||
| O | Western Electric (SP, Odd, Electrose, Thomas, Hemingray) | 1922 | 1309 | |
| Western Electric (Thomas, Electrose, Hemingray, SP) | 1922 | 19 | ||
| Western Electric (Hemingray, SP) | ?? | 8 | ||
| O | Western Electric (Graybar) (Hemingray, Thomas, Hewlett, Thomas strains and radio strain) | 1926-27 | 1012 | |
| O | Western Electric (bound bulletins) | |||
| Western United Electric Supply (Joslyn) | ?? | 4 | ||
| Westinghouse (Hemingray) | 1916 | 32 | ||
| Westinghouse | 1917 | 82 | ||
| O | Westinghouse | 1923-1924 | 190 | |
| Westinghouse | 1925-27 | 40 | ||
| O | Westinghouse | 8687 | 1926-1928 | 188 |
| Westinghouse | 8687 | 1926 | 30 | |
| Westinghouse | 1928 | 16 | ||
| O | Westinghouse | 213 | 1931 | 73 |
| Westinghouse (deadend spools) | 1935 | 1 | ||
| O | Westinghouse | 1936-1938 | 80 | |
| O | Westinghouse | 1939-1940 | 1228 | |
| Westinghouse (suspension) | 1941 | 10 | ||
| O | Westinghouse | 100 | 1949 | 894 |
| Westinghouse | 100 | 1949 | 4 | |
| Westinghouse | 1951 | 7 | ||
| Westinghoue (Hemingray) | 1959 | 1 | ||
| Wetmore Savage (Hemingray, Westinghouse) | 1929 | 1 |