Sam Kweskin, an artist for the Martin Goodman line of comic books who returned briefly to Marvel in the early 1970s, died Thursday morning. Mark Evanier goes into greater detail about his relationship with Bill Everett and the Sub-Mariner comic book, which had it continued might have afforded Kweskin regular work for a sustained period. Kweskin spent the majority of his career in advertising art. He originally got into comics out of a desire to move to New York from Chicago.
There is a nice "in-his-own-words" article about Kweskin here, with an accompanying profile by Atlas-era expert Dr. Michael Vasallo.