2009
Co-op E3 Cockshutt 30 Restoration, Tractor Museum
1948
Engineers Bulletin FT 53: Operations and Maintenance of Farm Tractors, Tractor Museum
1947
CockShutt 30 Repair Parts List, Tractor Museum
Operating Instructions for Cockshutt 30 Tractor, Tractor Museum
1928
Allis-Chalmers 20-35 Test 151, Tractor Museum
Catapillar 20 Test 150, Tractor Museum
Monarch H Lubricating Instructions Test 147, Tractor Museum
Repair Parts Price List for Lauson Tractor 20-35 Test 148, Tractor Museum