Product Placement

In trying to guess when this film was shot I noted a product placement which helped me zero in on a year. Near the end of the movie Torchy takes off for Cleveland on an American Airlines DC-3. AA started service with DC-3's in June 1936 and had Cleveland on their schedule that year. I can't find the actual filming dates for this 1937 film, but it seems logical that AA would benefit from the prominent way in which the plane was shot showing "American Airlines" on the shiny aluminum hull and the poshy appointed interior.