A family has 6 children and the parents place of birth plus five of the children are listed as being born in the same state of residence where the census in taken, but the 6th child's place of birth is listed as US. And this child is in the middle of the pack agewise, so would indicate that thew censustaker didn't lose train of thought and wrote United States instead of the state. Does this mean that child was likely adopted? The listing seems deliberate to me, place of birth: Maine, Maine, Maine, Maine, US, Maine Maine, Maine. Were there (any other) listing "codes" that censustakers were schooled in, and where is that resource?