When Addie sets up Trixie for cheating on Mose at the hotel, Addie leaves Trixie's room 235 and returns to her room. The room number on Addie's door is also 235.
Addie is inconsistent in the direction in which she rotates her hand when turning off her radio, and more often than not she rotates it clockwise (usually this would be "on") in order to turn it off.
The Sheriff leaves Addie and Mose in his office to go get a cup of coffee at around 5 a.m., but when they run out shortly afterward, it's clearly much later in day.
Addie's Nehi soft drink bottle rotates numerous times between shots without her handling it in the restaurant scene where she "wants her money".
The straw in the "Nehi and Coney Island" scene moves several positions during the scene. First the straw is straight and sticking out above the rim of the bottle, then it's submerged, then straight and above again, then leaning to the left, and then back to straight again.
Mose tells Addie that "...this particular person don't like cigarette smoke." He is referring to Trixie Delight. However, Trixie later is smoking a cigarette when Imogene informs her of Lloyd's proposition. This apparent goof is part of Miss Trixie's efforts to create a "proper" impression for Mose; she doesn't want him to be aware that she does, in fact, smoke.
The film is set in 1935 and there are multiple references to bootlegging. Although national Prohibition was repealed in 1933 by the 21st Amendment, the Amendment did not legalize liquor: it left regulation of liquor to the states. Kansas did not legalize the sale of cereal malt beverage (also known as 3.2 beer) until 1937, and the first post-Prohibition legalization of alcoholic liquor did not occur until the state's constitution was amended in 1948.
Ryan O'Neal's character is called "Mose" at one place in the closing credits and "Moze" in another place.
After Mose and Addie leave the hotel upon finding Trixie "cheating" with the desk clerk, they are driving in the rain. There is wind blowing Addie's hair and ribbon from the back, although the windows are clearly closed, as it is raining very heavily.
After Moze and Addie enter the "General Merchandise" building in Wilson, KS to pull the $20/$5 bill scam, the same building can be seen again through the window behind the cashier (with its original "Somer Hardware" sign) after Addie's "Lady, you made a mistake" line. In reality, the interior scene takes place in a building on the opposite corner of the street in the Florian Hardware building that Moze and Addie walked past after leaving the barber shop.
In the bootlegging scene in the field, the boxes are obviously empty. There's no sound of glass or liquid moving around, and they tumble around when the car moves.
When the hotel clerk is writing the note to accompany the box of candy he's sending to Trixie's room, the sheet of stationery he uses has white tape over 2 areas - one just above and another just below the word "Hotel" at the top - that blocks off some type of text.
After scamming the sheriff's brother for $625 of "his own liquor," Moze and Addie are brought to the sheriff's office for questioning. A few moments later of demanding the $625 back, the sheriff smashes a small BB game only about 1/2 thick, looking for money behind the "playfield". $625 in any denomination would never fit in such a small place.
In the bootlegging scene in the field, the boxes are obviously empty. There's no sound of glass or liquid moving around, and they tumble around when the car moves.
After scamming the sheriff's brother for $625 of "his own liquor," Moze and Addie are brought to the sheriff's office for questioning. A few moments later of demanding the $625 back, the sheriff grabs Addie's hat and turns it inside out looking for the money. The weight of that money, in any denomination, would weigh much more than the hat and the sheriff blatantly fails to see the money in plain view through the hat's knitting.
When Moze wants to trade his car for the truck, he tells the hillbillies about the car, "It's brand new!" Yet, it has been driven for a while through dusty roads and is therefore used. "Brand new" means still on the showroom floor, never having been driven or even test drove.
Fibber McGee's famous "closet gag", so anticipated by Addie while listening to the radio, didn't start until 1940.
When Addie is reading the obituary of Mr. Morgan, just above and below Mr. Morgan's are two obituaries - one Bessie Lees and one Oscar G. Olsen, both entering rest on April 28th, 1971. This film takes place in the mid-30s. Also worth noting is some of the obituaries state San Francisco as the home of a few of the deceased. This film takes place throughout Kansas and Western Missouri.
When Addie says, "Don't knock, use the key!" and sends Mose to Trixie's hotel room, we see a window behind Addie with a lace curtain. However, through this lace curtain, we can see cars that are of late 60s / early 70s style.
The Goodyear sign overhead the store porch in the later part of the movie displays their modern-letter logo, not the 1930s version.
In the scene with the $20 bill "gift" from Addie's "aunt", the $20 bill Mose gives to the cashier is vintage; the $5 bill Addie gives to the cashier is modern.
On several occasions throughout the picture, autos can be seen speeding away with tires screeching as though on asphalt, even though the vehicles are almost always on dirt roads.
When Miss Trixie has finished talking to Addie, Mose can be heard beeping the car horn a few times. There is then a short break and he beeps the horn one final time. On the final beep the camera cuts to Mose in the car and you can see that his arm is draped across the wheel and he clearly isn't pressing the car horn yet you can still hear it beep.
The camera crew's shadow can be seen as Mose, Trixie, and Imogene leave the circus tent.
When Addie and Mose are escaping from jail, the reflection of the crew's legs can be seen in the car door after Addie closes it.
As Mose and Addie are escaping the sheriff, the camera's shadow is visible as the car careens toward it.
After escaping the Doniphan County Sheriff's office in White Cloud, Kansas, Moze heads east toward the river, then turns left (north). He then realizes "the damn bridge is the other way" and turns the car around to the south. In reality, the bridge they eventually cross is still further north, in Rulo, Nebraska. Furthermore, his concern about crossing the river to Missouri (to get out of the Kansas sheriff's jurisdiction) would have been irrelevant if he had simply continued northbound on the highway another mile - he would have crossed the Kansas-Nebraska border.
When Mose and Addie are agreeing to meet after they arrive in St. Joseph, he tells her to meet him on the 'Corner of East Wearing and Burlington.' There is no Wearing (east or west) or Burlington in St. Joseph, MO. The streets in downtown St. Joseph, MO are numbered or named after the children of St. Joseph's founder, Joseph Robidoux.
Just before Mose takes Addie to the store for a hair ribbon, they are in a hotel room. As Mose passes by a small wall mirror, the shadow of a boom mic and an arm holding it can be seen.