The Elaine story was inspired by a real-life experience of Larry David's. David asked executive producer Howard West if he knew anyone who could get him tickets for a Yankees-Angels game at Anaheim Stadium. West knew the accountant of Angels owner Gene Autry and was able to get David tickets to seats in Autry's box behind the dugout. David, a New York native, wore a Yankees cap to game. An Angels executive came down to the box and asked David to remove the cap because it might offend Mr. Autry. David could be seen wearing the hat on the front page of the Los Angeles Times sports section the following day.
After being hit in the head by a baseball, Kramer refers to Elaine as "Carol" and to George as "Mike". This is a reference to Carol Leifer, on whom Elaine is partly based, and Michael Costanza, a friend of Seinfeld's whose last name was used for George.
Kramer mentions that Jerry and Elaine were like Abe Lincoln and Mary Todd on "The Letter" episode. On the show "Histeria! (1998)", one sketch shows the Civil War politics like an episode of Seinfeld, with Lincoln as Jerry and Mary Todd as Elaine. George B. McClellan was George Costanza.
The news paper on Mr Lippman's desk was from Sunday October 13 1991. The front page of the sports section showed the score from the 1991 national league championship series the Atlanta Braves defeated then Pittsburg Pirates 10-3.