Vertical window ventilighter, closed.

Horizontal window ventilighter, closed.

Horizontal window ventilighter, open.

Simon Ventilighter Co. View of porch Ventilighter.

View of Ventilighter under Queensboro Bridge, in market.

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

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

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

Machine closed.

30 East 42nd Street. Sample window taken at office, light metal casement sash, closed.

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

Antique silver ship on wheels, vertical.

53rd Street and 6th Avenue. New York Hilton Hotel, close-up detail, section of windows.

Double bed, vertical bar type, fully open.

[Window.]

Double bed, vertical bar type, in closet.

Sewage disposal plant, disintegrating tanks, closed.

[Sixth Avenue El train station closed.]

Clary-Reel Oven, bread oven, closed.

Washable window.