60 years ago, on December 30, 1963, serial production of the most famous and common tracked agricultural tractor DT-75 was started at the Volgograd Tractor Plant. The manufacture of a monomodel (general-purpose tractor DT-75) moved to the production of a large family of modifications and complete sets, the total number of which is approaching 30. The mass-production included basic general-purpose tractors DT-75, DT-75M, DT-75MV, DT-75N, DT-75D, their swamp DT-75B, DT-75BV, DT-75NB and steep DT-75K modifications. There are also peat DT-75DT and arable-tilled DT-75NP, DT-75DP tractors, produced in small batches. And tractors DT-75DA, DT-75BK, DT-75BR, remaining only in prototypes. These little-known tractors are described in this article.