8.5 x 11 product catalog, with nice yellow offset color highlighting black and white illustrations - pages really pop! No date, assuming 1950s, 31 pages.
Considering "used" as it's open, but in about as good as condition as you can imagine - has been tucked inside the original Caterpillar mailing envelope for decades. Superb condition. Has Logan, Utah Tractor Service advertisting printed on rear cover.