in Rocket Man Comics (Rucker Publications Ltd., 1946 series) #v2#1 ([circa 1945])
in Extinct (New England Comics, 1991 series) #2 (Fall 1992)
in Action! Mystery! Thrills! Comic Book Covers of the Golden Age: 1933-45 (Fantagraphics, 2011 series) (December 2011)
in Comics about Cartoonists: Stories about the World's Oddest Profession (IDW; Yoe Books, 2012 series) (September 2012), (September 2012)
in Punch Comics (PS Artbooks, 2023 series) #9Signature spotted by Frank Motler.
Partial Indicia from Frank Motler:
PUNCH COMICS, July 1944, No. 9. Published bi-monthly by DYNAMIC PUBLICATIONS, 420 DeSoto Ave.,
St Louis 7, Mo. Editorial & executive offices 163 23rd Street, New York 11, N. Y.
...
ENTIRE CONTENTS copyright Harry "A" Chesler, Jr Features Syndicate, 163 W. 23rd St., N. Y. 11, N. Y. Printed in U.S.A.
last app. in DYNAMIC COMICS #9
Four one-panel gags about house trailers.
Appears to be a rather blatant knock off of National / DC's "Calling All Cars" (later "Radio Squad") feature created by Siegel and Shuster, although the name of that verson's star is Sandy Kean. But the introductory blurb for this feature even describes Powers and O'Shay as members of "the famous radio squad."
last app. in YANKEE COMICS #4
last app. in SUPERSNIPE COMICS #11 (Street and Smith)
Art credits confirmed by Bill Black in Golden Age Men of Mystery (AC, 1996 Series) #8 (1998).