Resident telephone and telegraph operator at Rothman's Pharmacy, circa 1912 glass negative Rosenfeld, Morris Circa 1912 1984.187.119 ViewNew York Telephone Company Offices in Hackensack, circa 1912-1913 glass negative Rosenfeld and Sons circa 1912-1913 1984.187.888 ViewModel with Telegraph Printer at Rosenfeld and Sons Studio, New York City, 1929 safety negative Rosenfeld and Sons 1929-04-05 1984.187.34740 View
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Wireless communication systems ViewTransatlantic cables (1857) ViewTransatlantic cables (1866) ViewTransatlantic cables (1865) ViewTelephone ViewRadio ViewTechnology View
