Results for "Washington (D.C.)"
Smithsonian Astrophysical Observatory in the South Yard
- Date: 1899
- Creator: Unknown
- Creator: Unknown
Astronomical Instrument, South Yard
- Date: c. 1900
- Creator: Unknown
- Creator: Unknown
Abbot at Table Mountain, California
- Date: c 1925
- Creator: Unknown
- Creator: Unknown
Patent Drawing for Abbot's Pyrheliometer
- Date: 1940?
- Creator: Unknown
- Creator: Unknown
SAO Buildings at Mt. Montezuma, Chile
- Creator: Unknown
- Creator: Unknown
Camera Used by Smithsonian Astrophysical Observatory
- Date: c. 1960
- Creator: Unknown
- Creator: Unknown
Solar Observation Station at Mt. Montezuma, Chile
- Date: c. 1920
- Creator: Unknown
- Creator: Unknown
SAO Buildings at Mt. Montezuma, Chile
- Date: c. 1946
- Creator: Unknown
- Creator: Unknown
Secretary Abbot Carrying the Radiometer up Mount Wilson
- Date: c. 1930?
- Creator: Unknown
- Creator: Unknown
Observatory on Mount St. Katherine, Egypt
- Date: c. 1933
- Creator: Unknown
- Creator: Unknown
Tyrone Solar Station, Burro Mountain, NM
- Date: c. 1940
- Creator: Unknown
- Creator: Unknown
Super-Schmidt Camera Installation in New Mexico
- Date: c. 1960
- Creator: Unknown
- Creator: Unknown
