TEE WESTERN UNION CENTRAL TELEGRAPH OFFICE AND PLANT IN NEW YORK CITY. r SWITCH BOARD CONNECTIONS. FSE. WESTERN UNION TELEGRAPH PLANT NEW YORK—DYNAMO CONNECTIONS., scientific american, 1892-03-26
TEE WESTERN UNION CENTRAL TELEGRAPH OFFICE AND PLANT IN NEW YORK CITY. r SWITCH BOARD CONNECTIONS. FSE. WESTERN UNION TELEGRAPH PLANT NEW YORK—DYNAMO CONNECTIONS., scientific american, 1892-03-26
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