New Jersey Public Records and Archives:
http://www.nj.gov/state/darm/
New Jersey State Library:
http://www.njstatelib.org/NJ_Information/
Philadelphia Architects & Buildings Project (over 1500 NJ buildings listed):
http://www.philadelphiabuildings.org/pab/
University of Pennsylvania Architectural Archives:
http://www.design.upenn.edu/archives/archives
The Athenaeum of Philadelphia:
http://www.philaathenaeum.org/archives.html
Columbia University Libraries:
http://www.columbia.edu/cu/lweb/
Princeton University Library:
http://libweb.princeton.edu/
University of Delaware Morris Library:
http://www.lib.udel.edu/
University of Delaware Institutional Repository - Center for Historic Architecture and Design:
http://dspace.udel.edu:8080/dspace/handle/19716/420
University of Delaware Center for Historic Architecture and Design Collection:
http://www.udel.edu/CHAD/collection.html
New York Public Library:
http://www.nypl.org/
Library of Congress:
http://www.loc.gov/