SHIELD-WIZARD COMICS #7, 1942. The Kirby checklist credits this to Kirby/Novick, which seems plausible, but a bit surprising. It would be the only Kirby work for MLJ in the era (after they became Archie he seems to have done a short story in 1947, then of course the late 1950s super-hero stuff). It's a very nice cover, very much in the spirit of the Captain America covers Kirby had done the previous year.
KO COMICS #1, 1945. Not sure what the story with this cover is. The publisher is Geronoa (or possibly Gerona), and the cover has a "JCA" signature, but does appear to be partly by Kirby, certainly having some traits of his work of the era. Not sure the name of the character, could be "The Duke of Darkness" or "The Menace", which are listed in Overstreet as characters in here. Any more info would be appreciated.
CHARLIE CHAN #6, 1955. Published by Charlton, presumably picking up some unused inventory material from the Prize series of 1948. This is a great dynamic cover, my favourite of these three.