Author
Delaware River Port Authority
3
Philadelphia Chamber of Commerce
2
Ralston, Robert, 1761-1836
2
U.S Board of Engineers for Rivers and Harbors
2
Gales & Seaton,
1
Knappen Tippetts Abbett Engineering Co
1
Martin, Alfred Simpson
1
Tippetts-Abbett-McCarthy-Stratton
1
U.S Maritime Commission
1
U.S Shipping Board
1
United States Congress House
1
United States. Army. Corps of Engineers
1
United States. Board of Engineers for Rivers and Harbors
1
United States. Congress
1
United States. Congress. House. Committee on Commerce
1
United States. Maritime Administration
1
United States. Maritime Commission
1
Vaughan, John, 1756-1841
1