Category:Built in Washington, D.C. in 1815
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- States of the United States
- Alabama
- Connecticut
- Indiana
- Kentucky
- Louisiana
- Maryland
- Massachusetts
- Michigan
- New Hampshire
- New York
- North Carolina
- Ohio
- Pennsylvania
- Rhode Island
- South Carolina
- Virginia
- West Virginia
- District of Columbia
- Washington, D.C.
- Insular areas
- Puerto Rico
Subcategories
This category has the following 4 subcategories, out of 4 total.