On April's intern application, it says her middle name is Marie, however it is revealed in S3, EP9 that her middle name is Roberta.
When Ben is talking to the camera about being a mayor when he was 18, viewers see 2 newspaper articles; the first one is about Ben as a mayor, written by a Minnesotan, while the second article on the right is about a fire in Pawnee, Indiana.
When Ben is talking to the camera about being a mayor when he was 18, viewers see a newspaper from 1993 with two articles side-by-side; the first one is about Ben as the young mayor of a Minnesota town, while the second article on the right is about a fire in Pawnee (no state named). Both articles' reporters have bylines of "Minnesota Enterprise Reporter," which appears to be the name of the newspaper. As there is no Pawnee, Minnesota, this does not make sense; if a fire in Pawnee was large enough to make national news, it would list the state as there are multiple cities named Pawnee across the country.
Ben states that when he was 18, he chose "Whoomp! (There It Is)" as the song to play at his inauguration ceremony as mayor of Partridge, Minnesota. However, according to the newspaper article from February 18, 1993, he was elected mayor on November 7, 1992, and presumably had already been in office since January 1, as the article goes into detail about how he has spent his time as mayor. "Whoomp! (There It Is)" was not released until May 1993 and became popular later that summer.