Mt. Wilson Observatory of the Carnegie Institution of Washington, D.C.

Front:
Mt. Wilson Observatory of the Carnegie Institution of Washington D. C., located on the Summit of Mt. Wilson, California Frashers 7OTOS F4201

Back:
- Kodak -- -- Paper-- ANGELENO PHOTO SERVICE - 1030 SO. ALVARADO, L. A. 6, CALIF.-2 PHOTO POST CA