Caterpillar Tractors and Dozers on the Prowl

Caterpillar tractors work hard at the Tri-State Gas Engine & Tractor Show in Portland, Ind.

A 1929 Caterpillar Model 15 Motor Patrol grader from the collection of Jim Leonard.
A 1929 Caterpillar Model 15 Motor Patrol grader from the collection of Jim Leonard.