National Register of Historic Places
Long Green Valley Historic District
Baldwin, Baltimore County, Maryland
The record
- Listed
- December 30, 1982
- Type
- Historic district
- Address
- Glen Arm, Baldwin Mill, Manor, and Hartford Rds. areas, Baldwin
- County
- Baltimore
- State
- Maryland
- Period of significance
- 1700 to 1924
- Contributing resources
- 112 buildings
- Coordinates
- 39.47495, -76.48866
- Reference number
- 82001589
Slide toward Today to fade the historical sheet and see the modern map underneath.
The outline is the area recorded for this listing in National Park Service map data, drawn approximately.
David Rumsey Map Collection, Stanford LibrariesDavid Rumsey Map Collection, Stanford LibrariesDavid Rumsey Map Collection, Stanford LibrariesJohn Carter Brown Library, Brown UniversityDavid Rumsey Map Collection, Stanford Libraries