"Test no. 392. Ferguson TE-20. L.F. Larsen & R. Hautzenroeder." Side view of Ferguson TE-20 tractor on the dirt test track. Hautzenroeder is on the driver's seat of the tractor and Larsen is standing by the side of the tractor
"Test no. 403. Massey-Harris 22RT." Belt test of Massey-Harris tractor is shown at the tractor's rea...
Side view of the Ford 4110 tractor with two-post roll bar parked outside at the test lab
A side view of a Deutz DX-120 tractor from test 1405. The tractor is parked on the drive south of th...
"A Massey-Harris-Ferguson TO-35 being tested on the dirt track in 1955." Side view of Massey-Harris-...
Massey-Harris 44K during belt test 427. Side view of tractor inside test lab. A Massey-Harris engine...
Three-quarter view of International TD-20 tractor during drawbar test 806. The TD-20 is towing a TD-...
Deutz-Fahr DX3.50 tractor, test 1574. The tractor is parked on the test track south of the lab build...
1948. Danny Larsen (son of Lester Larsen) driving HD19 on the test track during the limber-up phase ...
Three-quarter view of Ford 960 tractor during drawbar tests on the test track towing the Adams tract...
Side view of John Deere 2550 tractor from test 1471. The tractor is parked behind the south door of ...
All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as...
Engineer working with John Carlile's treadmill dynamometer inside the test lab. The tractor being te...
A side view of the Hesston 1580 DT from test 1451. The tractor is parked on the grass south of the t...
"Test no. 403. Drawbar Test H .Mizner. Don." Side view of Massey-Harris 22 RT tractor driven by H. M...
Side view of John Deere 4050 Quad-Range Diesel tractor from test 1590. The tractor is parked on the ...
"Test no. 403. Massey-Harris 22RT." Belt test of Massey-Harris tractor is shown at the tractor's rea...
Side view of the Ford 4110 tractor with two-post roll bar parked outside at the test lab
A side view of a Deutz DX-120 tractor from test 1405. The tractor is parked on the drive south of th...
"A Massey-Harris-Ferguson TO-35 being tested on the dirt track in 1955." Side view of Massey-Harris-...
Massey-Harris 44K during belt test 427. Side view of tractor inside test lab. A Massey-Harris engine...
Three-quarter view of International TD-20 tractor during drawbar test 806. The TD-20 is towing a TD-...
Deutz-Fahr DX3.50 tractor, test 1574. The tractor is parked on the test track south of the lab build...
1948. Danny Larsen (son of Lester Larsen) driving HD19 on the test track during the limber-up phase ...
Three-quarter view of Ford 960 tractor during drawbar tests on the test track towing the Adams tract...
Side view of John Deere 2550 tractor from test 1471. The tractor is parked behind the south door of ...
All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as...
Engineer working with John Carlile's treadmill dynamometer inside the test lab. The tractor being te...
A side view of the Hesston 1580 DT from test 1451. The tractor is parked on the grass south of the t...
"Test no. 403. Drawbar Test H .Mizner. Don." Side view of Massey-Harris 22 RT tractor driven by H. M...
Side view of John Deere 4050 Quad-Range Diesel tractor from test 1590. The tractor is parked on the ...
"Test no. 403. Massey-Harris 22RT." Belt test of Massey-Harris tractor is shown at the tractor's rea...
Side view of the Ford 4110 tractor with two-post roll bar parked outside at the test lab
A side view of a Deutz DX-120 tractor from test 1405. The tractor is parked on the drive south of th...