The main reason for the return of Laverne and Shirley for this episode is that their new show debuted directly following. Creator Gary Marshall wanted to reacquaint audiences to the girls before Lavern and Shirley began.
John Moran, who played Myron, is the younger brother of Erin Moran, who played Joanie.
At the beginning of the show, Mr. Cunningham, Richie, Ralph, Potsie and Fonzie are watching an NFL game between the (Chicago) Bears and the (Chicago) Cardinals. They debate about putting in the Bears quarterback, George Blanda, and Richie says he thinks George Blanda has "a couple good years" left in him to play football. The joke in this situation is that this particular game was played in the 1956 season, with Blanda having already played in 8 NFL seasons, yet George Blanda was still playing in the NFL in 1975, two decades after the setting for this episode. George Blanda played for the Oakland Raiders during the 1975 season and the Raiders season/Blanda's career ended with a loss in the NFL playoffs two weeks before this episode aired on television.
Actor Kristopher St. John plays 9 year old a tough talking dice shooting black kid (Booker Brown) with his arm in a sking in this episode.
George Blanda played 26 seasons of profesional football. This is more than anyone else in the game, ever.