Agricultural Machinery  
   Contains descriptions and drawings of ground breaking, seed depositing, gathering, and miscellaneous farm implements.
   http://www.history.rochester.edu/appleton/a/agmac-m.html

Waikato Vintage Tractor and Machinery Club  
   A New Zealand club for antique farm equipment.
   http://www.vintagetractors.co.nz/

The Deere Farm  
   Pictures of various restored antique tractors, engines, implements, and general items.
   http://www.personal.psu.edu/users/b/r/brl115/pictures.htm

Chickentown Gas and Steam Association  
   Annual steam and gas engine show in Pennsylvania. Demonstrations and antique displays. See operating engines, sawmill, grist mill.
   http://www.chickentown.org

The J.I.Case Heritage Foundation  
   Features photographs and show dates of steam traction engines, threshers and early gas tractors.
   http://www.caseheritage.org/

The Old Machinery Magazine  
   An Australian bi-monthly magazine covering stationary engines, tractors and farm machinery, including rallies and auctions.
   http://www.tomm.com.au/

Pioneer Engineers Club of Indiana  
   A group of people who enjoy bringing their antique farm equipment to an annual show to foster appreciation for bygone days on the farm.
   http://www.pioneerengineers.com