Category:20th-century black and white photographs of Washington, D.C. by decade
- 100 most populous cities of the United States
- 1–25
- Boston
- Chicago
- Los Angeles
- New York City
- San Francisco
- Washington, D.C.
- 26–50
- 51–75
- 76–100
- Buffalo
States of the United States: California · Colorado · Illinois · Indiana · Iowa · Massachusetts · Michigan · Minnesota · Missouri · Nevada · New Jersey · New York · Ohio · Oregon · Pennsylvania · Virginia · Washington · West Virginia · Wisconsin – Washington, D.C.
![](https://upload.wikimedia.org/wikipedia/commons/thumb/0/03/Flag_of_Washington%2C_D.C.svg/28px-Flag_of_Washington%2C_D.C.svg.png)
Subcategories
This category has the following 10 subcategories, out of 10 total.