The last on screen appearance by Greta Garbo who is here "Herself (uncredited)" due to the fact that she had been filmed unpaid and without consent walking down a New York street.
According to a 2012 biography of her, Greta Garbo: A Divine Star, written by David Bret, Garbo, without her knowledge, made her last appearance on film in this movie. The camera operator, Jack Deveau, was obsessed with Garbo and had recently filmed her through a telephoto lens on First Avenue in New York City, wearing a trench coat and hat, stopping for a brief moment to talk with a passer-by and then crossing the street. This was then incorporated into the story as a flashback on the part of one of the titular characters, relating to the other how this was the most exciting moment of his life - getting to actually meet Greta Garbo.