Source Data Reference for:
City = Philadelphia
Time = 1900
| City | Year | Size | Size Comment | Year Comment | Author | Title | Location |
|---|---|---|---|---|---|---|---|
| Philadelphia | 1875 | 791,000 | Tertius Chandler | Four thousand years of urban growth | p491 | ||
| Philadelphia | 1875 | 791,000 | Tertius Chandler | Four thousand years of urban growth | p520 | ||
| Philadelphia | 1875 | 791,000 | Tertius Chandler | Four thousand years of urban growth | p536 | ||
| Philadelphia | 1875 | 791,000 | Tertius Chandler | Four thousand years of urban growth | p534 | ||
| Philadelphia | 1875 | 791,000 | Tertius Chandler | Four thousand years of urban growth | p535 | ||
| Philadelphia | 1900 | 1,418,000 | Tertius Chandler | Four thousand years of urban growth | p534 | ||
| Philadelphia | 1900 | 1,418,000 | Tertius Chandler | Four thousand years of urban growth | p530 | ||
| Philadelphia | 1900 | 1,418,000 | Tertius Chandler | Four thousand years of urban growth | p533 | ||
| Philadelphia | 1900 | 1,418,000 | Tertius Chandler | Four thousand years of urban growth | p532 | ||
| Philadelphia | 1900 | 1,418,000 | Tertius Chandler | Four thousand years of urban growth | p492 | ||
| Philadelphia | 1900 | 1,418,000 | Tertius Chandler | Four thousand years of urban growth | p536 | ||
| Philadelphia | 1900 | 1,418,000 | Tertius Chandler | Four thousand years of urban growth | p537 | ||
| Philadelphia | 1900 | 1,418,000 | Tertius Chandler | Four thousand years of urban growth | p540 | ||
| Philadelphia | 1900 | 1,293,700 | Carl Ritter | Ritter's geographisch-statistisches Lexikon | |||
| Philadelphia | 1900 | 1,400,000 | George Modelski | World Cities -3000 to 2000 | p63 | ||
| Philadelphia | 1914 | 17,600,000 | Tertius Chandler | Four thousand years of urban growth | p504 |