[Trade Journal]
Publication: Electrical Review
New York, NY, United States
p. 103, col. 2
Imperial Porcelain
C. S. Knowles, of Boston and New York, general agent for "Imperial" porcelain insulators, manufactured by the Imperial Porcelain Works, of Trenton, N. J., has issued a very handsome booklet printed in two colors, giving full details and illustrations of the various types of insulators made by this well known firm. The booklet will be of interest to any one interested in high-potential electric transmission.
