Chelsea Telephone Exchange, testing box.

View of test for window in Chelsea exchange.

View of test for window in Chelsea exchange.

View of test for window in Chelsea exchange.

View of test for window in Chelsea exchange.

Bay Boulevard. Far Rockaway Telephone Exchange addition.

National City Bank. Telephone exchange room.

North River Savings Bank (now Chelsea Exchange National Bank), interior.

Communications, Telephone Exchange.

Communications, Telephone Exchange.

Communications, Telephone Exchange.

Bay Boulevard. Far Rockaway Telephone Exchange addition.

West 100th Street. New York Telephone Exchange Building.

Communications, Telephone Exchange.

Communications, Telephone Exchange.

Communications, Telephone Exchange.

Telephone, New York Telephone Co. Exchanges.

Telephone, New York Telephone Co. Exchanges.

Telephone, New York Telephone Co. Exchanges.

[Telephone Building.]