Irwin Hasen's cover for Green Lantern #29 (December 1947). Below is his painted recreation of that cover.
Irwin Hasen's autobiography, Loverboy (Vanguard, 2009) was written when he was 91. Below is "Wildcat", the character he created with Bill Finger for Sensation Comics #1 (January, 1942). In 1961 and 1962, he received the National Cartoonists Society's Newspaper Comic Strip Award for Dondi, which he created with Gus Edson in 1954.
I spoke with Irwin not long ago while trying to solve the Tex Blaisdell Mystery. Bob and Ray's Western character, Tex Blaisdell, was around in the early 1950s, but why did they give him the same name as the cartoonist Tex Blaisdell? The leading experts in vintage radio couldn't give me an answer and neither could Blaisdell's daughter, Barbara. It's an enigma wrapped in a comic strip.
Dondi (April 15, 1962)
For NY Graphic's interview with Irwin Hasen, go here. Below is Dondi on a plaque in Gus Edson Park (Stamford,Connecticut).