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The McLellan micromotor photographed under a microscope
Unidentified man next to an oscilloscope
Jerome Vinograd
200″ tool shows core construction and method of checking curvature
Arrival of south box girder
Cornelis Wiersma with unidentified woman in lab
View of dome from Power House
John Bolton of CSIRO (Sydney, Australia) speaking at dedication of first 130′ radio telescope (OVRO)
Hallett Smith
Owens Valley Radio Observatory (OVRO), construction
Southern California Cooperative Wind Tunnel (SCCWT)
Solar furnace
Pol Duwez with solar furnace
Ned Hale and Robert Huttenback
200″ mirror disc filled with plaster of Paris
Mirror preparation
Meteorograph
Gilbert McCann
Peter Kyropolous
Closeup of 200″ plug showing healed fractures