Kugelblitz - S3-E4
Other mistake: When the sequence shows different places that Sissy and Harlan move to, it lists "Tampa Bay, Florida, 1969." The name of the city is Tampa... Tampa Bay is a much larger region of Florida that includes Tampa. While they could live in the Tampa Bay area, all of the others list the names of cities/towns. (00:01:53)
Suggested correction: That's not a mistake. They very well could have lived in the Tampa Bay area without specifically living in the city of Tampa. Just because the others are cities, doesn't mean it is a mistake.
Kugelblitz - S3-E4
Revealing mistake: At the beginning of the episode, as Sissy is signing the papers under the pseudonym Dana Pocket, she is holding cash in her left hand. The words "pictures" "and "film" can be appreciated on the faces of the bills, revealing this is fake money, often used in Hollywood productions.