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The Hart-Parr Oliver Collectors Association is the ultimate source of info for true tractor enthusiasts! As an official member of the Hart-Parr Oliver Collectors Association you will enjoy the premier magazine dedicated entirely to the Hart-Parr, Oliver and Cletrac tractors and equipment line.

Filled with fascinating features, historical highlights, detailed restorations, technical tips, upcoming event listings, and classified ads, the Hart-Parr Oliver Collector is your link to the Hart-Parr and Oliver community of collectors and enthusiasts.  To learn more about the Hart Parr Oliver Collector magazine, be sure to visit our magazine page.


Join the HPOCA today, and you'll get:


Membership rates are $35 for US subscriptions and $45 for foreign subscriptions.

Join by calling toll free at 888.400.4962. Outside the USA, call 937.610.0236


Or join online using the following links:


So don't hesitate,

Bylaws of the HPOCA

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