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- Hazen, Allen, 1869-1930 1 results
- Hering, Rudolph, 1847-1923 1 results
- Hill, John W. (John Willmuth), b. 1848 1 results
- Hollingsworth, Samuel S. 1 results
- Howard, Charles Spaulding, 1896- 1 results
- Interstate Commission on the Delaware River Basin 1 results
- Jenne, Lyle L. 2 results
- Klein, N. H. 1 results
- Koeppel, Gerard T., 1957- 1 results
- Latrobe, Benjamin Henry, 1764-1820 3 results
- Ledoux, J.W 1 results
- LeeDecker, Charles Francis, 1916- 1 results
- Leeds, Albert R. 1 results
- Leggette, Ralph Maxwell, 1899- 1 results
- Lewis, Joseph S., 1778-1836 3 results
- Lohman, S. W. (Stanley William), 1907-1992 1 results
- Maxwell Graduate School of Citizenship and Public Affairs 1 results
- McElroy, Samuel 2 results
- McFadden, W. H. 1 results
- McMurtrie, Richard Coxe, 1819-1894 1 results
- Mears, John W. (John William), 1825-1881 1 results
- Mease, James, 1771-1846 1 results
- Meredith, William M. (William Morris), 1799-1873 1 results
- Miller, John, of Philadelphia 1 results
- Minard, Duane 1 results
- Municipal Improvement Company (Philadelphia) 1 results
- Murphy, Howard 1 results
- New Jersey, 1 results
- New Jersey. Board of Conservation and Development 1 results
- New Jersey. Delaware and Raritan Canal Commission 1 results
- New York (N.Y.) 1 results
- New York (State) 1 results
- Northern Liberties (Philadelphia County, Pa.) Water Commissioners 2 results
- Nystrom, John W. (John William), 1824-1885 1 results
- Palmyra Filtrated Water Co. (Philadelphia) 1 results
- Pennsylvania 2 results
- Pennsylvania Geological Survey 2 results
- Pennsylvania Schuylkill Valley Railroad Company, 4 results
- Pennsylvania State College Institute of Local Government 1 results
- Pennsylvania Supreme Court Eastern District 5 results
- Pennsylvania Water Resources Committee 1 results
- Pennsylvania Water Resources Committee Engineers' Study Committee 1 results
- Pennsylvania Water Works Association 1 results
- Pennsylvania, 1 results
- Philadelphia 5 results
- Philadelphia (Pa.) 3 results
- Philadelphia (Pa.) Committee of Ways and Means 2 results
- Philadelphia (Pa.) Committee on the Water Works 1 results
- Philadelphia (Pa.) Councils Joint Committee on Water Works and City Property 1 results
- Philadelphia (Pa.) Dept. of Public Works 1 results more…