Subjects
- Aging -- United States -- Legislation1
- Blueprints1
- Buildings -- Remodeling for other use -- United States2
- Central business districts -- United States2
- City planning1
- City planning -- United States1
- Correspondence6
- Energy Conservation -- United States1
- Federal aid to transportation -- United States2
- Gerontology -- United States1
- Health1
- Highway engineering2
- Highway planning -- United States4
- International airports1
- Interviews1