New York: A.S. Barnes and Company, 1932. Hardcover. As. 189 pp. B/w diagram ills. Cover is unevenly faded with worn extremities. Red title and diagram on front cover, red lettering on spine. White eps a bit soiled, as are edges. But the contents of the book are clean and tight, and contain all one could possibly want to know about human pyramid building. Two fold-out charts follow text. Very Good.