Three-quarter view of Harris Power Horse during drawbar tests. The tractor is towing the Adams test car plus a load unit. The Power Horse was tested only on the drawbar because it lacked a PTO or belt pulley. It was a 4-wheel drive with a skid steer system
Three-quarter view of Ford 960 tractor during drawbar tests on the test track towing the Adams tract...
Three-quarter view of Caterpillar D8 during drawbar test at Nebraska tractor test station. The Cater...
First test using duals on a tractor in 1940 and the first year the new Charley Adams test car was us...
Three-quarter view of Harris Power Horse during drawbar test. Only the drawbar test was performed be...
"Getting ready to start drawbar test no. 403. Massey-Harris 22 RT." The Massey-Harris 22RT is towing...
The John Deere MT tractor during the drawbar test, while towing the Adams test car and two load trac...
Case SC tractor from test 496 during drawbar test. A Case representative is driving the tractor on t...
Three-quater view of International 4300 from test 815. The 4300 4-wheel drive is seen towing a numbe...
Test 136, 1927, Shaw Du-All model T25 being tested. The Adams test car is being used during the draw...
Bates Steel Mule model 45 towing the first drawbar test car and a load unit in test 187. The Bates S...
A large Crawler Tractor during a Drawbar Test -It is probably a TD 24 towing the Adams Test Car with...
Allis-Chalmers HD-19 during rated load drawbar test. Rear view of Allis-Chalmers HD-19 crawler round...
New Fordson Major diesel during drawbar test 500. Side view of Fordson Major Diesel tractor towing t...
Drawbar Test of John Deere L, Test#313, 1938. Tractor test on the dirt track. Th test car is the num...
"1948. 100 Max drawbar test no. 397. Allis-Chalmers HD-19." Side view of Allis-Chalmers HD-19 crawle...
Three-quarter view of Ford 960 tractor during drawbar tests on the test track towing the Adams tract...
Three-quarter view of Caterpillar D8 during drawbar test at Nebraska tractor test station. The Cater...
First test using duals on a tractor in 1940 and the first year the new Charley Adams test car was us...
Three-quarter view of Harris Power Horse during drawbar test. Only the drawbar test was performed be...
"Getting ready to start drawbar test no. 403. Massey-Harris 22 RT." The Massey-Harris 22RT is towing...
The John Deere MT tractor during the drawbar test, while towing the Adams test car and two load trac...
Case SC tractor from test 496 during drawbar test. A Case representative is driving the tractor on t...
Three-quater view of International 4300 from test 815. The 4300 4-wheel drive is seen towing a numbe...
Test 136, 1927, Shaw Du-All model T25 being tested. The Adams test car is being used during the draw...
Bates Steel Mule model 45 towing the first drawbar test car and a load unit in test 187. The Bates S...
A large Crawler Tractor during a Drawbar Test -It is probably a TD 24 towing the Adams Test Car with...
Allis-Chalmers HD-19 during rated load drawbar test. Rear view of Allis-Chalmers HD-19 crawler round...
New Fordson Major diesel during drawbar test 500. Side view of Fordson Major Diesel tractor towing t...
Drawbar Test of John Deere L, Test#313, 1938. Tractor test on the dirt track. Th test car is the num...
"1948. 100 Max drawbar test no. 397. Allis-Chalmers HD-19." Side view of Allis-Chalmers HD-19 crawle...
Three-quarter view of Ford 960 tractor during drawbar tests on the test track towing the Adams tract...
Three-quarter view of Caterpillar D8 during drawbar test at Nebraska tractor test station. The Cater...
First test using duals on a tractor in 1940 and the first year the new Charley Adams test car was us...