National Register of Historic Places
Halcyon House
Washington, District of Columbia County, District of Columbia
The record
- Listed
- March 31, 1971
- Type
- Building
- Address
- 3400 Prospect St., NW., Washington
- County
- District of Columbia
- State
- District of Columbia
- Period of significance
- 1750 to 1799
- Contributing resources
- 1 building
- Coordinates
- 38.90574, -77.06802
- Reference number
- 71001002