That’s a great book!! Hadn’t ever come across it before.
I agree with that Sqeggs guy: Frank Thomas (1914-1968) did a lot of fantastic covers, but doesn’t get much recognition these days. This blurb is from Lambiek:
Franklyn Thomas illustrated the syndicated 'All-American Football' strip in 1938, before working as a comic book artist in the 1940s. He did features for both Centaur ('Chuck Hardy', 'Dr. Hypno', 'The Eye Sees', 'Solarman') and Dell ('Billy and Bonnie Bee', 'Buddies' and scripts for 'Little Scouts', Marjorie Henderson Buell's 'Little Lulu' and Walter Lantz' 'Andy Panda' and 'Woody Woodpecker'.). Also in the 1940s, he made the 'Dinky Doyle' daily. In the following decade, he did the 'Going West' strip (1951-54), as well as 'Hossface Hank' (Al Smith Service, 1955-64). Between 1955 and 1965 he was ghost artist on Mik's 'Ferd'nand' strip.