Harvey Kyllo, a now-retired North Dakota farmer, first started restoring used tractors 20 years ago when he purchased an old John Deere model at an auctiom. Since then, Kyllo and his two sons have restored more than two dozen used John Deere tractors.

Kyllo and his two sons, Steve and Kevin, recently told AG Week that the business started when Harvey purchased a John Deere tractor on a whim and restored it; he then bought another and did the same thing, eventually amassing a collection of 24 used tractors that are now restored to immaculate condition.

Harvey only uses John Deere tractors - "Is there any other kind? he asks jokingly - and he often lends them to parades and agricultural expos so others can catch a glimpse of the antique tractors. Harvey and his sons perform all their work on the family farm in Blanchard, which Harvey bought in 1961 and his sons took over when he retired in the early 1990s.

Each of the farmers lends a unique ability to the restoration process: Harvey specializes in engine restoration, Steve enjoys body work and Kevin paints them when they are completed. The farming family is currently waiting to restore their most recent purchase, a John Deere 435, which Steve asserts they bought so they "can mess with it."