one set of 1953 Cadillac Thoro Check Installation and Operating Supplement . 28 pages. Covers topics such as organization of equipment, operators, planning your selling approach, and service. Used in like new condition
"Cadillac Thoro-check is a method of assuring Cadillac oqwners of uninterrupted driving pleasure and continuous enjoyment of the qualities built into the car to meet the demands of todays driving conditions."