Title Page | Collection Summary | Biographical/Organizational Note | Scope and Content | Arrangement
Organizational History
| Date | Event |
|---|---|
| 1830 | Establishment of the Depot of Charts and Instruments, Washington, D.C. |
| 1843-1844 | Construction of the observatory on its present site |
| 1846 | Publication of the first volume of Astronomical Observations, continued periodically and known as the “Washington Observations” |
| 1847 | Construction of the superintendent’s residence |
| 1849 | Establishment of the Nautical Almanac |
| 1860 | Expedition to Canada to view the solar eclipse |
| 1865 | Installation of the great transit circle telescope |
| 1869 | Expedition to various western states to view the solar eclipse |
| 1874 | Expedition to the Pacific to view the transit of Venus |
| 1878 | Expedition to various western states to view the solar eclipse |