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.

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

Horizontal window ventilighter, open.

Horizontal window ventilighter, closed.

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.

Emil Eiseman's residence, enclosed porch.

34 West 34th Street. Sulka Store, Ventilighter in interior.

Best and Co., final view.

Precision Machine Co. View of inserting movement in machine.

George G. Benjamin house, porch.

Precision Machine Co. View of inserting movement in machine.

Murphy Door Bed Co. View of kitchenette gas range.