Subjects
- Correspondence1
- Federal aid to transportation -- United States1
- Highway planning -- United States1
- Local transit -- United States1
- Maps1
- Photographs1
- Photography1
- Transportation2
- Transportation -- Planning1
- Transportation -- United States[remove]3
- Transportation -- United States -- Planning3
- Transportation -- Virginia, Northern -- Planning -- History -- 20th century1
- Transportation -- Washington Metropolitan Area -- Planning1
- Urban transportation1
- Video recordings1