Including a Curriculum Unit on Mammals of Circus and Zoo Developed in the Saratoga Union School. Illus. with b/w photos. Sacramento: California State Department of Education, (1937). 8vo. Wraps. iii, 57 p. Science Guide for Elementary Schools, Vol. III, No. 6. 1st ed. "Fresno County Free Library School Department" stamp on first leaf, similar stamp partially erased on front cover. Minor wear at edges; else very good.