The Associated Press reports thar Seymour Reit, author, illustrator, and one of the creators of Casper the Friendly Ghost, died November 21. He was 83.

For many years Reit wrote for Archie comics and Mad magazine. In addition to several nonfiction books for adults, Reith wrote over 80 children's books, including one of the more famous books about Balto, the lead dog of a sled team that carried serum needed to end a diptheria epidemic to the town of Nome, Alaska in 1925.