The game board used at the end of the episode is from the game "Sorry!"
Mickey Rooney's character is supposed to be age 85. At the time though, Rooney was only 67 in real life.
The title is taken from the movie "Arsenic and Old Lace" of 1944.
Per the title, the Broadway comedy "Arsenic and Old Lace" opened at the Fulton Theatre on January 10, 1941 and ran for 1,444 performances, closing on June 17, 1944.