Horizontal window ventilighter, closed.

Vertical window ventilighter, closed.

Vertical window ventilighter, closed.

Simon Ventilighter Co. View of porch Ventilighter.

Idlewild Airport, hangars, horizontal detail and long windows

19 West 44th Street. Bed with headboard, open, horizontal.

19 West 44th Street. Bed with curtain enclosure, open, horizontal.

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

View of Ventilighter under Queensboro Bridge, in market.

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

385 Madison Avenue. Manhattan Savings Bank, horizontal front elevation, two windows and center door, daytime].

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

Antique silver ship on wheels, horizontal.

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

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

Hospital room. Heating energy cabinet, horizontal style

Detail of basement stories 210-212 East 21st Street showing open points in terra-cotta window frames.

Open stair apartments.

Washable window.

[Window.]