Economic trivia
At the beginning of the film, Joe mentions his brother's coffin cost $10,000.00 (in 1927). That's the equivalent of $136,000.00 in 2015.
He also mentions his girlfriend Sarah is making $32.50/wk as a secretary. That equals $442/wk, or about $23k/yr, in 2015.
Merritt mentions he's already giving Agnes $1,000/mo for "expenses", and that she's asking for even more. That's $13,600/mo in 2015 dollars.