The John Deere 2520,3020,4000,4020,4320,4620,5020 Hi-Crops Tractor Brochure from 1970 is a 52-page original advertising piece featuring themes of agriculture. Produced by John Deere in the United States, this brochure highlights the company's line of tractors, specifically the Hi-Crops models. With detailed information and illustrations, this vintage brochure serves as a collector's item for enthusiasts of John Deere machinery and agricultural advertising.