Staplebound 4tos, 32 pages each. Very Good with light sunning and handling wear. Later printings of the popular workbooks introduced in 1938 (these copies have printer's codes suggesting 1953-1954). A set of natural history workbooks showing the anatomy of humans and animals; each facing page has a series of questions for the student and provides space for their own drawings and notes. The first volume has all of the 11 pages of original drawings completed in color pencil; the second has 6 pages of drawings in pencil and pen; the third volume is unmarked. Lovely original work coupled with wonderful plates reminiscent of old slate drawing books.