These sites all have plenty of information on the Central of New Jersey or can link you to informed people.
contact the CNJ Historical Society, P O Box 4226, Dunellen, NJ 08812 USA
CNJ video on YouTube (Thanks to Doug Hunt)
Anthracite Railroads Historical Society Inc. - the official site.
Central Railroad of New Jersey - a brief text history of the CNJ
Black Diamonds to Tidewater - CNJ & LV Railroad History - fantastic site
CNJ at TraiNutz - some art images of CNJ locomotives
Fallen Flags CNJ page - lots of photos of locomotives (mainly diesel) and other stock
Fallen Flags Railroads of New Jersey - retrospective look at New Jersey's railroads through maps, track and physical characteristics profiles, operating rules, timetables in the pre Conrail and New Jersey Transit Era
Historical Information Railroads of New Jersey. - maps and timetables of the CNJ in NJ
Railroad Historical Society - including lots of links
Railroad.net - including lots of links