The Lester F. Larsen Tractor Test and Power Museum is a museum dedicated to preserving and documenting the history of Nebraska's tractor test law, operated by the University of Nebraska–Lincoln (NU) in Lincoln, Nebraska, United States.

The facility, initially established as the Nebraska Tractor Test Laboratory, was renamed for longtime chief engineer Lester F. Larsen when it was converted into a museum in 1998.

Crozier soon drafted a bill requiring the validation of claims made by tractor manufacturers, later stating that "after operating, or attempting to operate, two excuses for tractors, I finally invested my money in a machine that would really do what the company said it would.

"[2] With the backing of Crozier and state senator Charles Warner, the Nebraska Tractor Test Law was passed in 1919, House Roll 85.

In 1980, tractor testing was moved to an adjacent building and the original facility was declared a historical landmark by the American Society of Agricultural Engineers (now the American Society of Agricultural and Biological Engineers).