Emil Gershwin worked in comics during the 40s and 50s for a variety of companies, including Fox, National (now DC), Quality (also now DC), Lew Gleason, and others. He did some superhero work - Starman, Kid Eternity, Captain Marvel, for example - but primarily he did genre work: crime stories, science fiction, and adventure strips.
Toth's letter to Gershwin's family praising their dad's work isn't online anymore, but this is what Toth wrote elsewhere about Gershwin as an influence: "...liked it as a blend of Alex Raymond's 'Flash' head/figural work - and Crane's dot-eyed and cartoonysimple doll-like figures, etc., a hoot, to me - always a fan - thru all his phases - via many publ'rs' books!"
From Crime & Punishment #28 (Lew Gleason, 1950), here's Emil Gershwin:
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