Palomar Observatory San Diego County, California - Vintage Postcard early_film and the back of the

and the back of the postcard has some age spots

Post Office

Single span

consisting of cypress islands

Palomar Observatory San Diego County, California - Vintage Postcard early_film and the back of theOn front: Palomar Observatory San Diego County, California On back: On Palomar Mountain, 69 miles north of San Diego, is the largest astronomical observatory in the world. Engineers at the California Institute of Technology spent many years alone in the grinding and polishing of the great 200 inch mirror lens, the largest reflector known to man. When completed, this observatory will consist of seven buildings, costing $6,000,000. 00. Unmailed: