$10 · Vintage: TMI-Grolier course TM-206 Elementary Arithmetic

Vintage: Elementary Arithmetic Decimal Numbers, course TM-206, 2nd edition (©1961, 1963, printed in 1970) for use with a TMI-Grolier teaching machine. In original box and in very good condition. Some minor foxing on the first page. Machine not included. Price reflects both its historical and collectable value.