The Jerry Lewis Telethon always started the Sunday evening preceding Labor Day and would conclude late Monday/Labor Day. While it would run for 21 1/2 hours, Jerry Lewis would host 20 1/2 hours, and the last hour was dedicated to the local Telethon.
The TV Guide on the living room table is the April 8, 1972 edition.
John Lennon and Yoko Ono performed on the Jerry Lewis Telethon on September 4, 1972.
There were no CG effects used to create or manipulate the cockroaches in this episode. The bugs were all real and seemed to genuinely like running along the track. (Also there were no injuries.)