[1] He is primarily remembered for his work on the daily comic strips Sparky, Angel, Mixed Singles/Boomer and Redeye, plus numerous magazine cartoons.
After a 1953 honorable discharge, he was back at the drawing board for the Publisher/Chicago Sun-Times Syndicate (1953–66) with the children’s strips Sparky and Angel.
In 1988, when cartoonist Gordon Bess found himself unable to continue his internationally known Redeye daily comic for King Features Syndicate, he handed it over to a collaboration of Casson as illustrator and Bill Yates as writer.
Casson had five cartoon books published, including the anthology Ever Since Adam and Eve for McGraw-Hill, the Whole Kids Catalogue and the Guinness Record Keeper.
Casson served on the Board of Governors of the Newspaper Comics Council, where he was chairman of the 1964-65 World’s Fair Committee.