Claim: "Kamp Krusty" of The Simpsons (season 4) was written by David M. Stern, and it was aired in 1992.
Evidence: "Kamp Krusty" is the first episode of The Simpsons' fourth season. The episode was written by David M. Stern and directed by Mark Kirkland. It originally aired on the Fox network in the United States on September 24, 1992. 
Season 4
Episode 1 David M. Stern Mark Kirkland September 24, 1992