In March 1956, these young men gathered around a tractor are participating in 4-H Club Week activities held at South Dakota State College. The Tractor Maintenance Class is class being held in the Livestock Pavilion, which is now home to the South Dakota Agricultural Heritage Museum. When you come to the museum you can look up and see the same trusses in the ceiling. This is one photo is a series of Tractor Maintenance Class pictures and they show many different types of tractors being studied.