Previous indexer identified the artist as Reed Crandall. Reed Crandall expert Roger Hill agrees that this is not Crandall.
The art match the Nicholas sample at Who's Who.
The artwork matches some Leav-credited stories in Jumbo Comics #28-29.
The art is similar to the Nordling sample on Who's Who.
Several Quicksilver stories are bylined Nick Cardy, but the art is not in any way similar to his Senorita Rio stories in Fight Comics #19 and 21. They are signed N. Viscardi, his real name. Also Nick Viscardi's first Lady Luck story in the Sunday Spirit section for May 18, 1941 has a very different style from this one. It is identical to the unmistakable art of Paul Gustavson. Either is Nick Cardy the writer, or just a byline name like most of the other byline names with no connection to any real artist used in Quality comics. A little mystery. Originally credited "Nick Cardy (signed)".
The artwork match the Witmer sample at Who's Who.
The art is very similar to Crandall's signed story in Police Comics #1, but the inking is a little different.
Lance Blackwood, according to the Who's Who, is a by-line on this strip.