Frank Nitti's suggestion that New York City was bought from the Indians for a lot less than $200,000 alludes to the perhaps apocryphal account of the Dutch West Indian Company's representative Peter Minuit purchasing the Island of Manhattan for an exchange of beads and other kinds of trinkets that amounted to 60 guilders in 1626 (or $24 had U.S. money been the currency, a value that would equal approximately $1,200 in the year 2024).
This is the third and final appearance Mike Kellin makes in the series. In each appearance, he plays a different role. His other two appearances occur in The Noise of Death (1960) and The White Slavers (1960). He is perhaps best remembered to 1960s TV audiences for his recurring role as CPO Willie Miller in the series The Wackiest Ship in the Army (1965).
Given an uncredited bit part as one of Frank Nitti's henchmen in this show, Charlie Picerni is perhaps better known in the industry for his work as a stunt coordinator/director, as well as performing stunts and acting as stunt doubles for other actors. His work in Die Hard (1988) and the franchise that followed made him a star in the field of movie stunts. The actor who plays Lee Hobson in The Untouchables (1959) is in real life his brother.
The $500 per week Nick Vascovitch claims Nitti pays him would equal approximately $11,400 in the year 2024. The $100,000 that Sebastion offers each assassin for his signature would amount to approximately $2,280,000.