A Day at the Races (movie)
A Day at the Races (1937) is the seventh movie starring the three Marx Brothers, with Margaret Dumont, Allan Jones and Maureen O'Sullivan. The plot revolves around Hugo Z. Hackenbush (Groucho), who is a veterinarian illegally employed as the medical director of Standish Sanitarium owned by Judy Standish (Maureen). Among other things they have to do to save the sanitarium from developers is to keep Mrs. Upjohn (Dumont) as a patient. She, of course, insists on being treated only by Dr. Hackenbush. To try to expose Groucho as a fraud, the bad guys call in Dr. Steinberg, who is played by Siegfied Rumann (also known as Sig Ruman), who was also Groucho's nemesis in A Night at the Opera. Exterior sequences were filmed at Santa Anita Park.
One of the funniest scenes in the movie is when Chico gives Groucho a tip on a horse, but in code, so that Groucho has to buy book after book from Chico to decipher the code (see image).