Brackenreid tells Higgins to enjoy the candy floss at the street fair. Commonly known as cotton candy, a dentist invented it in 1897; it was introduced at the 1904 St Louis World's Fair for 25 cents per box ($8.66 in 2024)
The butcher Todd McSweeney is a play on the name Sweeney Todd, "the demon barber of Fleet Street" who murdered his customers and his partner, Mrs Lovett, baked them into pies. He was introduced in a serialized story in 1846.
Frankenstein (1910) is a 16-minute film that was released on 18 Mar 1910. It was produced by Edison Studios, owned by Thomas Edison. The five-cent admission in 1910 is equal to $1.62 in 2024.
A version of the song "London Bridge is Falling Down" dates back to a mid-1600s nursery rhyme. It was set to music in the early-1700s.