American Film Institute Catalog of Feature Films 1931-1940 identifies Arnold Lucy as playing Hamilton; actually, Lucy plays one of the other bankers, and William Morris plays Hamilton.
The $100,000 trust fund Dwight gives Miss Dennis equates to nearly $2.2M in 2022. And the $50M Dwight says he has tied up in the building equates to about $1.09B in 2022.
The only shared credit of Warren William, who in movies during the 1930s was the first actor to portray the character of Perry Mason, and Hollywood gossip columnist and sometimes actress Hedda Hopper, whose son William Hopper was originally cast to play the iconic attorney in the classic sixties TV series version, Perry Mason (1957), until he and the actor originally cast as Mason's investigator Paul Drake, Raymond Burr, were switched in their roles by the show's creators at basically the last minute.
At the beginning of the film, there is an illustration depicting the Empire State Building on the right, which would have just been completed the year prior to this picture's release, and the taller, fictional Dwight Building on the left.
Boris Karloff: (at around 20 mins) Approaching a ticket counter as Norman Foster takes his leave. During filming of The Mask of Fu Manchu (1932), Boris Karloff took time off to appear in this film; the camera immediately cuts away once the actor appears, so the purpose behind his cameo seems to have been deleted.