This episode is mentioned at the end of The Leap Back - June 15, 1945 (1991). When Al is talking to Donna, he mentions that Sam is a stand up comedian in the Catskills.
In the original history, Mac MacKay was murdered on May 1, 1959.
One of the last names that Frankie uses is "Lane," the same name as Lois Lane, and one of her bits is "Supergirl."
This episode takes place in Glendale, Arizona on April 30, 1959 and in Gallup, New Mexico and Las Vegas, Nevada on May 1, 1959.
Mark Lonow, who plays Cocono Club owner Lou Collins, is co-owner of "The Improv" comedy club on Melrose Avenue in Los Angeles and helped expand it into a chain of clubs.