Longest career as a comics artist
Who
Al Jaffee
Where
United States (New York City)
When

The longest career as a comics artist is 73 years 3 months, achieved by Al Jaffee (USA), who has worked continuously since his first publication in Joker Comics in December 1942 through the April 2016 issue of MAD Magazine.

Mr. Jaffee has worked most prominently with MAD Magazine, where his art first appeared in 1956.