The 1937 Philadelphia Guide noted that, after the current Betsy Ross House was selected as the Flag House, the adjacent building where Ross may have indeed lived "was torn down to lessen the hazards of fire, perhaps adding a touch of irony to what may well have been an error in research." Although the house is one of the most visited tourist sites in Philadelphia, the claim that Ross once lived there, and that she designed and sewed the first American flag, sometimes called the Betsy Ross flag, are considered false by most historians.