Books Used as Reference, and Contributed Articles
| American Art Annual | F. N. Levy. |
| Annals | J. F. Watson |
| Automobile | Blue Book |
| Colonial Doorways | A. H. Wharton |
| Early Pietists | J. Sachse |
| Fairmount Park | C. S. Keyser |
| Forges and Furnaces | Colonial Dames |
| Guide Book to Historic Germantown | C. F. Jenkins |
| Hikes for Boy Scouts of America Charles | D. Hart |
| Historic Excursions | J. Campbell |
| History of Pennsylvania | Egle |
| Indian Trails | G. P. Donehoo |
| List of Sites | William J. Campbell |
| Music | F. I. Brock |
| Our Philadelphia | J. and E. R. Pennell |
| Pennsylvania Primer | Barr Ferree |
| Philadelphia | Sharf & Westcott |
| Philadelphia Firsts | W. I. Rutter, Jr. |
| Philadelphia Streets | J. Jackson |
| Population | U. S. Census for 1920 |
| Story of Philadelphia | L. J. Rhoads |
| The Keystone | Pennypacker |
| United States | Baedeker |
| Washington’s Itinerary | William S. Baker |
| Many County Histories and Historic Reports. |
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