A line from Herb's speech to Miles is inspired by the Gettysburg Address. Abraham Lincoln said "testing whether that nation, or any nation so conceived and so dedicated, can long endure." Herb said, "This firm cannot prosper... nor long endure..."
The logo on the door handle of the Rexroth mansion is the same as the logo for the Rich company in Ri¢hie Ri¢h (1994) where Edward Herrmann played Richard Rich marking the second time the actor has played a character with repetitive Rs in his name. This is likely a homage from the film makers to his previous role.