Source Data Reference for:
City = Portland (OR-USA)
Time = 1900
| City | Year | Size | Size Comment | Year Comment | Author | Title | Location |
|---|---|---|---|---|---|---|---|
| Portland (OR-USA) | 1900 | 90,000 | Tertius Chandler | Four thousand years of urban growth | p495 | ||
| Portland (OR-USA) | 1900 | 90,400 | Carl Ritter | Ritter's geographisch-statistisches Lexikon |