Results for "Astrophysical observatories"
Alexander Graham Bell
- Date: c. 1880s
- Creator: Unknown
- Creator: Unknown
Laboratory of Division of Radiation and Organisms, SIB
- Date: c. 1929-1934
- Creator: Unknown
- Creator: Unknown
Alexander Graham Bell
- Date: c. 1910s
- Creator: Unknown
- Creator: Unknown
Plan of Smithsonian Grounds
- Date: c. 1911
- Creator: Unknown
- Creator: Unknown
Alexander Graham Bell
- Date: 1876
- Creator: Unknown
- Creator: Unknown
Tyrone Solar Station, Burro Mountain, NM
- Creator: Unknown
- Creator: Unknown
Fred Whipple Receives "Distinguished Federal Civilian Award"
- Date: 1963
- Creator: Unknown
- Creator: Unknown
Secretary Abbot with Solar Equipment
- Creator: Unknown
- Creator: Unknown
Dr. Charles G. Abbot with Harmonic Print-out
- Date: 1973
- Creator: Unknown
- Creator: Unknown
Secretary Abbot with Printouts
- Date: c. 1968
- Creator: Unknown
- Creator: Unknown
Secretary Charles G. Abbot with Solar Boiler
- Date: c. September 30, 1936
- Creator: Unknown
- Creator: Unknown
Plan for the proposed National Museum of Engineering and Industry
- Date: 1925
- Creator: Unknown
- Creator: Unknown
