When speaking to Kevin, Drew states that he and a girl talked about Eddie Murphy when in a closet together. Wet Hot American Summer: First Day of Camp however is set in 1981, Eddie Murphy's first role wasn't until 1982.
Towards the last 8 minutes of this episode, Jeannine Garofalo's character in the angry mob is holding up the poster-sized fax they received. Faxes have always been at a maximum 8 and 1/2 inches wide, with the standard size being a letter sized sheet of paper, i.e. 8 and 1/2 inches wide by 11 inches tall.