Category:20th-century books from Portland, Oregon
- 100 most populous cities of the United States
- 1–25
- Boston
- Chicago
- Columbus
- Dallas
- Denver
- Los Angeles
- New York City
- Philadelphia
- Portland
- San Francisco
- Washington, D.C.
- 26–50
- Atlanta
- Baltimore
- Detroit
- Kansas City
- Minneapolis
- Raleigh
- Sacramento
- 51–75
- Cincinnati
- Cleveland
- Greensboro
- Jersey City
- St. Louis
- 76–100
Subcategories
This category has only the following subcategory.