The title is derived from the song "I'll Be Seeing You" written by Sammy Fain and the lyrics by Irving Kahal in 1938 for the Broadway musical 'Right This Way'.
Ross's inquiries about whether his coins are 'D' or 'S' alludes to the location where the coins were minted. A 'D' indicates Denver, where in 1906 the Treasury Department established a location for minting coins. An 'S' indicates San Francisco, where a mint was established in 1854.