Links:

Washington Crossing State Park
http://www.state.nj.us/dep/parksandforests/parks/washcros.html

Blue Mountain Antique Gas & Steam Engine Association
http://www.jacktown.org/

Rough and Tumble Antique Engineers Association
http://www.roughandtumble.org/

Antique Caterpillar Machinery Owners Club
https://www.acmoc.org/

John Deere
http://www.deere.com/wps/dcom/en_US/regional_home.page

Oil Field Engine Society
http://www.oilfieldengine.com/