Hotel Pennsylvania. N.Y.C. Simon Ventilighter Co.

View of Ventilighter under Queensboro Bridge, in market.

Vertical window ventilighter, closed.

37th Street and 5th Avenue. Ventilighters in the Franklin Simon Store.

Vertical window ventilighter, closed.

Horizontal window ventilighter, closed.

West 57th Street. Consolidated Gas Co. office interior. Ventilighter.

Horizontal window ventilighter, open.

120-06 Ninth Avenue. Porch view, upstairs.

[Interior, sun porch.]

[Detail of balcony or porch.]

Austin-Nichols Co., view of switchboard.

The Harlem Hospital, exterior of sleeping porches.

Best and Co., final view.

Emil Eiseman's residence, enclosed porch.

Precision Machine Co. View of inserting movement in machine.

Precision Machine Co. View of inserting movement in machine.

Precision Machine Co. View of inserting movement in machine.

Austin-Nichols and Co., view of two connecting boxes.

George G. Benjamin house, porch.