Not yet available on Youtube, but walk with me down memory lane:
An alledged time traveller is arrested in Central Park and is in the cage. During the show he convinces Harris to dump his gold investments and move to zinc. (Harris quote: "Oh a couple of tons".)
At the outro, the time traveller finally hears Dietrichs' full name.
TT: "Dietrich? THE Arthur Dietrich?"
AD: "Yes."
TT: "My goodness, sir this is such an honor! I'd never thought that I'd meet someone as great as you!"
Rest of the ol' 12th precinct stands around with gaping jaws.
Dietrich: "Hey, I couldn't have done it without you guys."
Cue exit music.