"Published in Great Britain by permission of Hillman Periodicals, Inc. Printed by Jenson Book Company, Ltd., Oadby, Leicester", as stated in the indicia. Also, this issue contains 3.5 pages of reprinted American ads.
Pencil credit verified by Roy Thomas, inker credit revised from Dan Zolnerowich ? to Schroeder by Craig Delich 2013-4-28, per Roy Thomas.
A brief history of submarines.