Source Data Reference for:
City = Springfield (IL-USA)
Time = 1900
| City | Year | Size | Size Comment | Year Comment | Author | Title | Location |
|---|---|---|---|---|---|---|---|
| Springfield (IL-USA) | 1900 | 34,200 | Carl Ritter | Ritter's geographisch-statistisches Lexikon | |||
| Springfield (IL-USA) | 1900 | 34,000 | Tertius Chandler | Four thousand years of urban growth | p501 |