Complex sentence: Martin Branner (1888-1971) was a cartoonist best known for his comic strip "Winnie Winkle", which he produced from 1920 to 1962 and for which he received the National Cartoonist Society Humor Comic Strip Award in 1958.
Split into simpler sentences: Martin Branner (1888-1971) was a cartoonist best known for his comic strip "Winnie Winkle", which he produced from 1920 to 1962. He received the National Cartoonist Society Humor Comic Strip Award for it in 1958.