Rough & Tumble Engineers Historical Association

Rough & Tumble Engineers Historical Association, founded in 1948 by Arthur S. Young, is both an event and a historical association of steam machinery enthusiasts. The association preserves moving artifacts and historical information about steam machinery used for agricultural purposes; the event, colloquially called the "Thresherman's Reunion," consists of live demonstrations of steam equipment, including tractors, engines, and steam engine powered machines (for instance, a shingle maker).

Rough and Tumble grew up on the grounds of the Arthur S. Young Company in Kinzers and the reunion is still held there.