November, 1939. Vol. 2, Number 11. KEEN DETECTIVE FUNNIES is published monthly by Centaur Publications, Inc., 420 De Soto Avenue, St. Louis, Missouri. Editorial and executive offices: 220 Fifth Avenue, New Yourk, N. Y. Entered as second class matter at the Post Office at St. Louis, Mo. Single copies 10c. Yearly subscription $1.00 in the U.S.A. (other countries $1.50) Copyright 1939 by Centaur Publictions, Inc. Contents must not be reproduced without permission. No actual person is named or delineated in this fiction magazine. Printed in the U.S.A.
On sale date from the publication date found in the Catalog of Copyright Entries, Part 2, Periodicals, New Series, Volume 34, 1939, Number 4. Second class periodical. Copyright number 433555.