Детали

Three technicians with Zeiss Projector parts

APHP.S10.F3.2

Three Adler technicians are working on the Zeiss Projector. An older gentleman and two young men, (left to right) Bert C. McKeena, Frederick O'Callaghan, and Curt Richter are putting together a part of the Zeiss. The parts are laid out.

One 4 x 5 inch black and white print

Zeiss projector, Adler Planetarium & Astronomy Museum -- Staff, Adler Planetarium & Astronomy Museum -- Sky Theater

Frederick O'Callaghan, Curt C. Richter, Bert C. McKenna

graphic material

ITEM