This series includes brochures, promotional materials, technical and service manuals, historical data, catalogs and price lists, advertisements, promotional materials, and various kind of tech literature related to tractors, commonly used farm machinery, and farming methods. Major brands of tractors mentioned in this series include Allis Chalmers, Caterpillar, John Deere, Massey Harris, Ford, Oliver, and Holt.

This series includes brochures, promotional materials, technical and service manuals, historical data, catalogs and price lists, advertisements, promotional materials, and various kind of tech literature related to tractors, commonly used farm machinery, and farming methods. Major brands of tractors mentioned in this series include Allis Chalmers, Caterpillar, John Deere, Massey Harris, Ford, Oliver, and Holt.