Original sentence: Emmanuel "Mac" Raboy (April 17, 1914 – December 12, 1967) was an American cartoonist best known for his work on Fawcett Comics' Captain Marvel Jr.and as the Sunday comic-strip artist of Flash Gordon for more than 20 years
Edited sentence: Emmanuel "Mac" Raboy (April 17, 1914 – December 12, 1967) was an American cartoonist whose comic books and strips remain collectibles more than 40 years after his death.He was known for his work on Fawcett Comics' Captain Marvel Jr.and as the Sunday strip artist of Flash Gordon for over 20 years