In Rollag Minnesota over the Labor Day weekend old farming methods are recreated at an event called the Western Minnesota Steam Threshers Reunion (WMSTR). This idea dates from 1940 when a group of farmers fired up an old steam thresher to harvest grain the old way. In 1954 the WMSTR group invited the public to this exhibition, and it has grown to an event that attracts up to 80,000 people.
The event is staffed by volunteers and has no commercial vendors. Church groups are on site selling hamburgers, cinnamon rolls and lemonade at very reasonable prices. The entry fee for adults is $15; kids get in free.
Functioning steam engines, tractors, and farm implements from over the past ~150 years are featured.
Animal-powered farm implements were featured this year, and these demonstrations were my favorite.
North MN Outdoors 