Communications, Telephone Exchange.
Telephone, New York Telephone Co. Exchanges.
Telephone Exchange 1896 Cortlandt St. West Wing.
[Telephone Exchange 1896 Cortlandt St. West Wing.]
[Telephone operators.]
[District selector frame in a dial exchange.]
Siegel Cooper, Sixth Ave. & 18th Street.
Residence, Mrs. Paran Stevens, N.E. 57th & 5th Ave. Leader of 400.
Communications, Marconi's Wireless Telegraphing Apparatus.
Communications, Marconi, Wireless Telegraph Inc.