Lippincott, 1949, 3rd. 7.7x 10.3; 64 pp. Picture Book hardback.
Leaf's cheerful cartoon people explain topics in simple math, including decimal numeration with Fatso zero, "the funniest number of the whole number family."
CONDITION: Very Good in Good Minus jacket; short scrapes on spine in creased dw with much of spine missing, ow acceptable; unclipped 1.75. Item #11969