Indicia (scan from bipcomics.com):
FEATURE STORIES MAGAZINE (formerly FEATURE PRESENTATIONS MAGAZINE) August, 1950, No. 3. Published bi-monthly by Hero Books, Inc., 221 Conyngham Ave., Wilkes-Barre, Pa. Executive offices at 60 E. 42nd St., New York 17, N. Y. Application for entry as second class matter pending. Price 10 cc per copy. Yearly subscription in the United States and its possessions, Mexico, South America, Spain, 75c including postage. $1.50 elsewhere. The publisher accepts no responsibility for unsolicited material. Copyright 1950 by Hero Books, Inc. Contents must not be reproduced without permission. Any similarity between any of the names of persons or places appearing in this magazine (except those based on history or fact) with actual persons or places is not intended and is purely coincidental.
Printed in U.S.A.
I believe Ingoo refers to Iguéla Lagoon in present-day Gabon.