Steel-wheeled Tractor

Paul Witty, Ursula Bringhurst & Barbara Nolen.  The Brave and Free.  Boston:  D.C. Heath & Co., 1952, Revised 1950.  Illustrations by Harve Stein.

Taken from an American school reader.  Rural kids in the 1950's would still have seen these things operating in the fields.  Today, of course, they're either collector's items or lawn ornaments.