ca. 1947 John Deere Model M: Portrait of the Big Four "30" 4 Cylinder Gas Tractor, ca. 1910

Portrait of the Big Four "30" 4 Cylinder Gas Tractor, ca. 1910:

Previous articles in the series:
ca. 1947 John Deere Model M: Introduction
ca. 1947 John Deere Model M: Broke New Ground
ca. 1947 John Deere Model M: Exploded Diagrams
ca. 1947 John Deere Model M: Complete Tractor with Plow
ca. 1947 John Deere Model M: "Exploded" Full Size Model M
ca. 1947 John Deere Model M: Competition