Mad Men is a television show that is set in the 1960s and is known for its attention to historical detail and accurate portrayal of the culture, fashion, and design of the time period. The interior design in the show was created to be authentic and reflective of the design styles and trends of the mid-20th century.

Overall, the show is considered to be fairly accurate in its portrayal of interior design in the 1960s. The set designers and costume designers worked to research and recreate the look and feel of the time period, and the show's creator, Matthew Weiner, has stated that he was very involved in the design process and paid close attention to historical accuracy.

However, it's important to keep in mind that Mad Men is a fictional television show and certain artistic and storytelling choices may have been made that are not entirely historically accurate. As with any television show or film, it's important to take the depicted events and details with a grain of salt and not assume that everything depicted is a completely accurate representation of real life.