THE OPERATOR THE BISHOP ^armmwm* Insfniment … States, held in the City of New York, dated Dec. 8, 1878. imamnA & Co., J The INSULATING PROPERTIES OF GUTTA-PERCHA t) tor Submarine Telegraphic Cables have been thoroughly tested for the past thirty years, and for subterranean pur- Telegraph and Telephone Supplies, Amateur Telegraph Goods, Etc.,…
Telegraph -- Periodicals
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