[Trade Journal]
Publication: Johnston's Electrical & Street Railway Directory
New York, NY, United States
p. 586, col. 1-2
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Insulating Specialties — Mfrs. of.
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Trimble Patent Insulator Co., The 311 W. Baltimore, Baltimore, Md.
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Elkins Tree Insulator Co., The (Chas. Elkins), mfrs. of insulators., West Mansfield, Mass.
Locke & Co., Fred M., Victor, N. Y.
CONOVER INSULATOR CO. (C. E. Conover), mfrs. of self-typing porcelain insulators and cleats, 368 Vine, Cincinnati, Ohio.
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Insulator Hooks — Mfrs. of.
BUTLER HARD RUBBER CO., THE, 33 Mercer, New York, N. Y.
Insulators — Mfrs. of.
Peru Electric Mfg. Co., Peru, Ind.
BROOKFIELD, WM., 83 Fulton, New York, N. Y.
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Insulators, Glass — Mfrs. of.
Oakman Mfg. Co., 219 State, Boston, Mass.
Standard Glass Insulator Co., The, 129 Tremont, Boston, Mass.
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