If you use the spreadsheet, "Census Tracker", please be aware that 1820 is not accurate. In the 1820 census, the 16-25 column was divided into 2 columns (16-18 and 19-25). I have notified the originator and perhaps he will make the changes necessary. To listings: My apologies for using this method to communicate but I felt that all listers should be aware. Karl MacEachron Fresno CA