For those of us that come across orphaned, trapped, wounded or injured wildlife there are two very good local rehab centers that you can bring them to in the Philadelphia/South Jersey region.
The Woodford Cedar Run WIldlife Refuge http://www.cedarrun.org/
The Schuylkill Center for Environmental Education (SCEE) http://www.schuylkillcenter.org/departments/wildlife/
Here is a link for info on the proper steps in animal rescue from the SCEE.
It contains a list of what to do in the situation and names of other centers