Source Data Reference for:
City = Harrisburg (PA-USA)
Time = 1900
| City | Year | Size | Size Comment | Year Comment | Author | Title | Location |
|---|---|---|---|---|---|---|---|
| Harrisburg | 1900 | 50,000 | Tertius Chandler | Four thousand years of urban growth | p498 | ||
| Harrisburg (PA-USA) | 1900 | 50,167 | n/a | http://www.wikipedia.org/ | eng2020 |