Even though the Who's Who doesn't list Gustavson as a writer of the strip, Mike Kooiman and Jim Amash state in the Quality Companion that he created the strip and wrote it, so the script credit has been added by Craig Delich 2013-1-18. Also verified by Gustavson's son, Terry Gustafson.
Letterer credit courtesy of Terry Gustafson, Paul Gustavson's son.
Writer credit revised from "Joe Devlin" (presumably a typo for "John Devlin") to ? by Craig Delich 2013-4-7. The Who's Who does not indicate a writing credit for John Devlin on this strip. Writing credit updated to "Bernard Dibble?" Artist correction from Joe Devlin to Bernard Dibble, who took over this strip as artist, not writer, in 1943 from John Devlin.
writer id by Bob Hughes
Dick Mace text story.
Credits from Martin O'Hearn at http://martinohearn.blogspot.com/ ; art formerly attributed to Al Bryant.