Author
Schoff, Wilfred H. 1874-1932
4
Philadelphia (Pa.). Department of Wharves, Docks and Ferries
3
International Congress of Navigation
2
International Congress of Navigation Philadelphia)
2
Spirit of Philadelphia
2
Taylor, Frank H. 1846-1927
2
Taylor, Frank Hamilton, 1846-
2
United States. Army. Corps of Engineers
2
American Imprint Collection (Library of Congress)
1
Bell, Edwin Price
1
Delaware River Port Authority
1
Franklin Institute (Philadelphia, Pa.)
1
Hammond Incorporated
1
Haupt, Lewis Muhlenberg, 1844-1937
1
Hornblower Marine Services
1
Marian S. Carson Collection (Library of Congress)
1
Martin, Alfred Simpson
1
Philadelphia Board of Port Wardens
1
Philadelphia Maritime Museum
1
Philadelphia Port Corporation
1
Smith, Philip Chadwick Foster
1
Trigg, Ernest T., 1877-1957
1
United States. Board of Engineers for Rivers and Harbors
1
United States. Department of the Treasury
1
United States. Maritime Administration
1
United States. Maritime Commission
1
Weglein, Richard
1
Weitzel, G. 1834-1884
1