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Technician adjusting plane in the interior of a wind tunnel
Owens Valley Radio Observatory (OVRO), construction
Hugo Benioff with fused-quartz extensometer
John Anderson and Byron Hill leaving plane
Bill Dreyer’s lab
Pouring concrete slab of the observing floor of the 200″ dome
Tom Lauritsen, Max Delbruck, Niels Bohr and Paul Epstein
120″ mirror as seen through the edge of the disc
Virus Conference
Frits Went
Cornelis Wiersma
48″ Schmidt--exterior view with shutters open
William B. Munro
Gordon Garmire
Cutaway diagram of the 60″ photometric telescope building at Palomar Observatory
Caltech-Armed Forces meteorology training course
Arthur Galston attending lecture
Mt. Wilson comparator, side view
Findlay Russell
Julius Pearson