I just started looking into my cousins' ancestors named Sampson and Fowler. Ancestry.com's 1870 census for Brothertown has a number of pages where the handwritten letter in Column 6, "Color," has been interpreted as a "J" for Japanese, when it was actually an "I" for Indian. (Actually, it looks more like an F or even a 7!)
Not sure how many pages had this enumerator's quirky letter I, but too many for me to correct, one by one. Does anybody know the best way to approach Ancestry, about changing these transcriptions from Japanese to Indian /Native American?