Source Data Reference for:
City = Pittsburgh
Time = 1950
| City | Year | Size | Size Comment | Year Comment | Author | Title | Location |
|---|---|---|---|---|---|---|---|
| Pittsburgh | 1925 | 823,000 | Tertius Chandler | Four thousand years of urban growth | p505 | ||
| Pittsburgh | 1950 | 1,310,000 | Tertius Chandler | Four thousand years of urban growth | p507 | ||
| Pittsburgh | 1950 | 676,800 | Johan Huizinga | Internationaal aardrijkskundig woordenboek | |||
| Pittsburgh | 1970 | 2,045,000 | Tertius Chandler | Four thousand years of urban growth | p510 |