[Men working on sidewalk.]

[Man working with scientific equipment.]

[Men working on elevated train tracks.]

[Man working with lead.]

[Interior, typesetting.]

[Man operating unidentified machine.]

[Construction work in front of a block of townhouses.]

[Man working at the New York World's Fair construction site.]

[Firing china, man adding wood to a kiln.]

[Man at a desk of equipment at NBC studios.]

[Man working on a camera lens.]

Labor Temple, New York City. Friend's Work Camp

Green Street. Roman Bronze Works, finishing room.

Verrazano-Narrows Bridge, Vertical View of Man and Handrail on Bridge

Verrazano-Narrows Bridge, Horizontal View of Man and Handrail on Bridge

[Men working at the New York World's Fair construction site.]

Labor Temple, New York City. Friend's Work Camp

[C.M. Sorensen & Co. Inc. vacuum pump.]

[Men working at the New York World's Fair construction site.]

Labor Temple, New York City. Friend's Work Camp