First appearance of Dash Riprock.
Allan Pinkerton formed "The Pinkerton Detective Agency" in 1850 at 80 Washington Street in Chicago, Illinois.
Dash is working on the same movie as Kitty Devine (the actress who was after Jed and played by Sharon Farrell in the previous episode) but she isn't seen or mentioned.
Springfield, Missouri is referenced several times as there is purportedly a person working at a flour mill there who somehow has knowledge of infamous Hollywood parties. Springfield is about 1,600 miles from Hollywood and in 1965 had a population around 105,000.
Drysdale refers to Dash Riprock and Bolt Upright as "Thing 1" and "Thing 2," a sly reference to the Dr. Seuss book "The Cat in the Hat Comes Back."