1. Betts, Emmett A. and Betts, Thelma Marshall. An Index to Professional Literature on Reading and Related Topics New York: American Book Company, 1945. Pp. 138. Includes 8, 278 references published prior to January 1, 1943; also a topic index under more than 150 different headings.
2. Rate of comprehension of reading; its measurement and its relation to comprehension.