Copyright 1943 by Comic Magazines.
Writer credit revised from "Joe Devlin" (presumably a typo for "John Devlin") to ? by Craig Delich 2013-4-6. The Who's Who does not indicate a writing credit for Devlin on this strip. Artist correction from "Joe Devlin" to Bernard Dibble, who took over this strip in 1943 from John Devlin. Dibble's writing credit is not confirmed, but "Fitzwillie" is a character name he used multiple times in his strips.
Art was originally credited to Paul Gustavson, but this is Leav. He has large hands and many lively faces, some panels without backgrounds, and a special way of running with high lifted legs. Compare with his signed story in Wanted Comics #52. He is credited on this feature by Jerry Bails' Who's Who on both pencils and ink. Jim Amash, in the Quality Companion, verifies that Gustavson wrote this feature through Police #22, then picked up again with #37. The intervening writer is unknown for this story.
Writer revision from "Joe Devlin" (presumably a typo for "John Devlin") to ? by Craig Delich 2013-4-8. The Who's Who does not indicate a writing credit for John Devlin on this strip. Artist revision from Joe Devlin to John Devlin.
Art revision from Al Bryant? to Crandall, some info and synopsis added by Craig Delich 4-12-09.