Source Data Reference for:
City = Pittsburgh
Time = 1900
| City | Year | Size | Size Comment | Year Comment | Author | Title | Location |
|---|---|---|---|---|---|---|---|
| Pittsburgh | 1875 | 205,000 | Tertius Chandler | Four thousand years of urban growth | p520 | ||
| Pittsburgh | 1875 | 205,000 | Tertius Chandler | Four thousand years of urban growth | p491 | ||
| Pittsburgh | 1900 | 562,000 | Tertius Chandler | Four thousand years of urban growth | p492 | ||
| Pittsburgh | 1900 | 603,000 | Tertius Chandler | Four thousand years of urban growth | p530 | ||
| Pittsburgh | 1900 | 238,600 | Carl Ritter | Ritter's geographisch-statistisches Lexikon | |||
| Pittsburgh | 1900 | 603,000 | Tertius Chandler | Four thousand years of urban growth | p540 | ||
| Pittsburgh | 1900 | 562,000 | Tertius Chandler | Four thousand years of urban growth | p536 | ||
| Pittsburgh | 1914 | 775,000 | Tertius Chandler | Four thousand years of urban growth | p504 |