Old Naval Observatory, [between 1867 and 1869]
This file appears in: Old Naval Observatory (National Observatory; Naval Museum of Hygiene; Naval Medical School)
![Old Naval Observatory, [between 1867 and 1869]](https://historicsites.dcpreservation.org/files/original/f62f14122044e5f70fe304648893a24a.jpg "Old Naval Observatory, [between 1867 and 1869]")
U.S. Observatory. [Washington, d.c.: photographed and published by bell & bro., washington, d.c., between 1867 and 1869] Image. Retrieved from the Library of Congress, https://www.loc.gov/item/92516247/. (Accessed February 23, 2017.)
This file appears in: Old Naval Observatory (National Observatory; Naval Museum of Hygiene; Naval Medical School)
Old Naval Observatory (National Observatory; Naval Museum of Hygiene; Naval Medical School)
The original National Observatory was authorized by President Tyler in 1842 and completed in 1844 according to plans prepared by Lieutenant James Melville Gilliss. The observatory was the site of notable advances in astronomy and mathematics, and is…