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Caltech’s 10-foot wind tunnel
Unidentified mand examining disc
Don Hendrix with small 200″ polishing machine
Floyd Humphrey
Chester Stock
120″ disc with group
Winch used for pulling trailer with 200″ disc into the CIT Optical Shop
Top side of metrical system of the Southern California Cooperative Wind Tunnel (SCCWT)
Jesse and George Greenstein with Naomi Wasserburg
Hugh David Politzer
Testing crane, lifting 116,000 pounds
200″ telescope dome building--insulation and furring of the ground floor
Synchrotron power room
Interior of 200″ dome
Owens Valley Radio Observatory (OVRO), construction
48″ Schmidt--first row of bump plates
Mount Wilson 60″ telescope
Prime focus cage entering annealing furnace
Owens Valley Radio Observatory (OVRO), construction