Real-life boxer Max Baer didn't "win a decision" over any boxer during the time period shown in this episode.
Agent Rossman was not riding in the car with the rest of the Untouchables as they made their way to the showdown at the hotel. Yet, when the shooting starts, Rossman comes charging in with a shotgun along with the others.
Actor John Duke is seen using his right hand to reach for his gun when his character is named "Lefty" Southern, implying that he is left-handed.
For the scheme of printing one million bogus one-hundred dollar bills with the same serial number to work, they would have all had to be spent in a coordinated manner, at the same time across the country. Once one of the bills was spotted and reported as counterfeit, an alert would have gone out to all banks and the other bills would not be accepted anywhere.
When Dreiser is seen making a daring prison break, the stunt double can be seen standing up after supposedly falling from the rope that the viewer is made to believe is well short of the ground.
Lily's "Fleur-de-Lis" beauty shop, which is in Chicago, can be seen right next door to "Whalen's Ham 'n' Eggs", which is in Kansas City as seen in episode #44, The Jamaica Ginger Story.
Val Ferrar is said to have had one million dollars in a money belt around his waist at the time he died. One million dollars, even in the largest bills available at the time, would not fit into a waist-worn money belt.
Goof: Rafael Torrez makes a call and tells the operator to get COurtland 0-7868...that's CO0-7868, or 250-7868, which is a 7-digit number. But phone numbers were only 6 digits long in the 1930s. Later, Jim Martinson phones LItton-4116...LI-4116, which is a 6-digit number.
Goof: Capone is seen talking to the doctor fixing his stitches and says he thought about being a doctor when he was a boy in Italy. The real Capone was not from Italy. He was born in Brooklyn.
Goof: Albert Miris is seen going into a theatre on September 8, 1931, with a poster reading "Escapades of 1933."
There is a scene where at the theater, a sign reads: "Dish Night." During the Depression, on designated nights (usually a slow night like Tuesday or Wednesday, never on a Friday when they start showing the new weekly movies) the ushers would give a china dish to all adult ticket holders, with a different dish being given each week. It turned out to be a clever way to get people to go to the movies, and for the people to stock their cupboard with a set of new dishes.
Goof: The projectionist is heard saying "...talkies are just a fad." The first all talking film, Lights of New York, had been released in 1928, so by 1931, talking films were well established and the thought of returning to silent movies would not be a valid statement for that date.
Continuity: Walter Winchell, in the narration, refers to Carl Arnold as John Arnold.
Nitpick: Youngfellow dumps a bag of zinc sulfide powder onto the dirt road. It gets on the wheels of the getaway car. Ness and his men follow the car -- which leaves a glowing trail on the road for miles and miles. Just how much zinc sulfide got on the tires, about a hundred pounds of the stuff?
Nitpick: Radio reporter Loren Hall is giving this news story: The Italian embassy in Washington has held up the release of Ernest Hemingway's "A Farewell to Arms," the picture starring Helen Hayes, Gary Cooper, and Adolphe Menjou -- until Benito Mussolini is satisfied it contains no scenes detrimental to the Italian Army. I guess Benito wasn't pleased-- this is late Summer, but the movie wasn't released until December 8, 1932.
Joe and Frank Genna are both fictional characters. None of the real life blood-stained Genna brothers bore those names.
Waxey Gordon suffered through a real life personal tragedy during his trial for income tax evasion. Waxey's son was an honor student at the University of North Carolina who was killed in a car wreck while driving from Chapel Hill NC to New York in order to attend his father's trial.
Waxey Gordon would later file bankruptcy to avoid paying the back taxes he owed to the government. Contrast this to another notorious tax cheat--Al Capone. Capone paid the government every cent he owed them in back taxes, fines, and penalties.
Waxey Gordon's real name was Irving Wexler. He served six years in prison for income tax evasion which was detailed in this episode. Several years later Gordon was arrested and convicted of narcotics trafficking. In 1952 he agreed to testify against several other members of the nationwide drug syndicate and was taken to the West Coast where he was housed at the Alcatraz prison hospital due to his declining health. Gordon died there of a heart attack.
The character of Big Bill Swinney appears to be based on Big Bill Dwyer, a New York based bootlegger during the Prohibition Era.