Results for "Twitter"
Secretary Abbot with Printouts
- Date: c. 1968
- Creator: Unknown
- Creator: Unknown
Patent Drawing for Abbot's Pyrheliometer
- Date: 1940?
- Creator: Unknown
- Creator: Unknown
Secretary Charles G. Abbot with Bolometric Apparatus
- Date: 1900
- Creator: Unknown
- Creator: Unknown
Sumatra Eclipse Expedition
- Date: 1901
- Creator: Unknown
- Creator: Unknown
Secretary Abbot Carrying the Radiometer up Mount Wilson
- Date: c. 1930?
- Creator: Unknown
- Creator: Unknown
Manly Receives Langley Medal
- Date: 1930
- Creator: Unknown
- Creator: Unknown
Astrophysics Exhibit, Conference on the Future of the SI
- Date: 1927
- Creator: Unknown
- Creator: Unknown
Smithsonian Astrophysical Observatory Employees
- Date: 1930-1940?
- Creator: Unknown
- Creator: Unknown
Tennis Courts Behind SI Building
- Date: 1920
- Creator: Unknown
- Creator: Unknown
Swearing in of Secretary Leonard Carmichael
- Date: 1953
- Creator: Unknown
- Creator: Unknown
Secretary Charles G. Abbot with Solar Boiler
- Date: c. September 30, 1936
- Creator: Unknown
- Creator: Unknown
Secretaries Carmichael, Abbot & Wetmore, c. 1950s
- Date: c. 1950s
- Creator: Unknown
- Creator: Unknown
