Results for "Update"
Betsy Heck Demonstrating Physignotrace
- Date: c. 1986
- Creator: Unknown
- Creator: Unknown
John A. Roebling
- Date: c. 1930?
- Creator: Unknown
- Creator: Unknown
Secretary Charles G. Abbot
- Date: 1897
- Creator: Unknown
- Creator: Unknown
T. Dale Stewart and J. Lawrence Angel
- Date: 1975
- Creator: Unknown
- Creator: Unknown
General Joseph G. Totten
- Date: c. 1850
- Creator: Unknown
- Creator: Unknown
Arthur C. V. Schott
- Date: c. 1860s
- Creator: Unknown
- Creator: Unknown
Secretary Charles D. Walcott as a Young Child
- Date: c. 1854
- Creator: Unknown
- Creator: Unknown
Secretary Charles D. Walcott at the Age of twenty-three
- Date: 1873
- Creator: Unknown
- Creator: Unknown
Alexander Wetmore, Sixth SI Secretary
- Date: 1944
- Creator: Unknown
- Creator: Unknown
Mary Henry, Daughter of Secretary Henry
- Date: c. 1855
- Creator: Unknown
- Creator: Unknown
Engraving of John Quincy Adams
- Creator: Unknown
- Creator: Unknown
W. S. Adams, Director of Mount Wilson Observatory
- Date: c. 1940?
- Creator: Unknown
- Creator: Unknown
