 Stein worked for many Colorado-based publications including "Cervi's Journal" and "The Rocky Mountain Business Journal" (since renamed, "Colorado Business Journal") before joining the "Rocky Mountain News" as staff editorial cartoonist in 1978, a position he has held ever since.He was the President of the Association of American Editorial Cartoonists in 1988.In 2006, Stein co-hosted the 2006 AAEC Cartoonist's Convention, which was held in Denver.