New York: D. Van Nostrand Company, Inc., 1929-30.
Hardcover. First editions. Octavos. Volumes I and II of III. 429, 397  pp. Illustrated in black and white by the author. Both volumes with the ownership stamp and signature of a noted American psychologist on the front fly, and offsetting on the endpapers, else just about fine in good only dustwrapper with toning, chipping, and external tape repairs. Volume I with a publisher's advertising card laid in. Two volumes (*The Problems of Psychology and Perception* and *Sensation*) of three, uncommon in jacket.