Used in SOTI, page 160.
Indicia (scan from bipcomics.com):
MARTIN KANE, Private Eye (formerly My Secret Affair), June, 1950, No. 4. Published bi-monthly by Hero Books, Inc., 221 Conyngham Ave., Wilkes-Barre, Pa. Executive offices at 60 East 42nd St., New York 17, N. Y. Entered as second class matter September 15, 1949, at the post office at Wilkes-Barre, Pa., under the act of March 3, 1879. Price 10c per copy. Yearly subscription in the United States and its possessions, Mexico, South America, Spain, $.75 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. "Except those who have authorized the use of their names herein, the stories, names, characters, incidents, and institutions mentioned or portrayed in this periodical are entirely imaginary and fictitious, and no identification with actual persons, living or dead, is intended or should be inferred."
Printed in U.S.A.
Available as a scan at digitalcomicmuseum.com.
Reprint from Murder Incorporated #8 February 1949; first page changed-Martin Kane added
Reprint from Murder Incorporated #8 February 1949
On back cover.