Author
Chamber of Commerce of Greater Philadelphia
2
Delaware Estuary Program
2
Delaware River Basin Commission
2
Pennsylvania Environmental Council
2
Delaware Valley Regional Planning Commission
1
Nanticoke Lenni-Lenape Indians
1
Nanticoke Lenni-Lenape Indians of New Jersey
1
Penjerdel (Corporation)
1
Philadelphia Water Department
1
Philadelphia Yearly Meeting of the Religious Society of Friends
1
Watershed Association of the Delaware River
1