#51 TWO BY TWO
Two By Two: Growth in Arithmetic, Discovery Edition was released in 1957 (this edition from 1962) by Harcourt, Brace & World, Inc. It is 160 pages of math practice. The book was made by John R. Clark, CHarlotte W. Junge and Caroline Hatton Clark with illustrations by Betty Alden, Ruth Ruhman, Frank Schwarz, Charles Dougherty and other Delos D. Rowe associates. The book is staple bound with color illustrations throughout.
