Results for "History"
Observatory at Mt. Montezuma, Chile
- Date: c. 1920
- Creator: Unknown
- Creator: Unknown
Richard E. McCrosky at Work
- Date: c. 1970
- Creator: Smithsonian Astrophysical Observatory
- Creator: Smithsonian Astrophysical Observatory
Tennis Courts Behind SI Building
- Date: 1920
- Creator: Unknown
- Creator: Unknown
Dr. Earl S. Johnston
- Date: 1936
- Creator: Unknown
- Creator: Unknown
Walter Munn and the K-50 Geodetic Camera
- Date: c. 1970
- Creator: Smithsonian Astrophysical Observatory
- Creator: Smithsonian Astrophysical Observatory
Loyal B. Aldrich and Others at SAO Site
- Date: c. 1920
- Creator: Unknown
- Creator: Unknown
News Broadcast of Secretary Abbot's Solar Invention
- Date: c. September 30, 1936
- Creator: Tolman, Ruel P (Ruel Pardee) 1878-1954
- Creator: Tolman, Ruel P (Ruel Pardee) 1878-1954
