Author
- Philadelphia (Pa.). Councils. Watering Committee 7 results
- Philadelphia Record 6 results
- Pennsylvania Supreme Court Eastern District 5 results
- Philadelphia 5 results
- Philadelphia (Pa.) Watering Committee 5 results
- Philadelphia (Pa.). Councils 5 results
- Philadelphia Watering Committee 5 results
- Haworth, James 4 results
- Pennsylvania Schuylkill Valley Railroad Company, 4 results
- Bailey, Lydia R., 1779-1869 3 results
- Latrobe, Benjamin Henry, 1764-1820 3 results
- Lewis, Joseph S., 1778-1836 3 results
- Philadelphia (Pa.) 3 results
- Philadelphia Water Department 3 results
- Rudolph, Sebastian A. 3 results
- Stinson, Charles H. 3 results
- Wallace, William S. 3 results
- YA Pamphlet Collection (Library of Congress) 3 results
- Baldwin, Loammi, 1780-1838 2 results
- Beckel, Charles N. 2 results
- Bureau of Municipal Research (Philadelphia, Pa.) 2 results
- Erdmann, Frederick 2 results
- Jenne, Lyle L. 2 results
- McElroy, Samuel 2 results
- Northern Liberties (Philadelphia County, Pa.) Water Commissioners 2 results
- Pennsylvania 2 results
- Pennsylvania Geological Survey 2 results
- Philadelphia (Pa.) Committee of Ways and Means 2 results
- Philadelphia Ordinances, etc 2 results
- Rau, Robert 2 results
- Spring Garden (Philadelphia County, Pa.) Water Commissioners 2 results
- Thayer, William Watmough, 1862-1893 2 results
- Trautwine, John C. (John Cresson), 1810-1883 2 results
- Water Research Foundation for the Delaware River Basin 2 results
- Water Supply Commission of Pennsylvania 2 results
- Wilmington (Del.). Water Department 2 results
- Alliance for Watershed Education of the Delaware River 1 results
- American Association for the Advancement of Science 1 results
- American Imprint Collection (Library of Congress) 1 results
- Aycrigg, Benjamin 1 results
- Baer, George F. (George Frederick), 1842-1914 1 results
- Bascom, F. (Florence), 1862-1945 1 results
- Benson, Barbara E. (Barbara Ellen), 1943- 1 results
- Bethlehem (Pa.) Committee on Water Works 1 results
- Bethlehem, Pa Committee on Water Works 1 results
- Bibbins, James Rowland, 1877-1936 1 results
- Binney, Horace, 1780-1875 1 results
- Birkinbine, Henry P. M. 1 results
- Birkinbine, Henry P. N. 1 results
- Blake, Nelson Manfred, 1908-1996 1 results more…