Author
Baldwin, William C.,
1
Barralet, John James
1
Delaware. Bureau of Archaeology and Historic Preservation
1
Delaware. Department of Transportation
1
Delaware. Division of Highways. Location and Environmental Studies Office
1
Kidde Consultants
1
P.A.C. Spero & Company
1
Pennsylvania Historical and Museum Commission
1
Pennsylvania. Department of Transportation
1
U.S Federal Highway Administration
1