May 14 - Check out the supplement US Census

May 14 – Supplemental US census covered manufacturing, industry and agriculture for various census years from 1810 to 1880. Order them from the FHL or check repositories that have the regular census.

I have even found some listed on-line. They list the homeowner’s name, so if you can’t find someone in the regular census but you find them on a Supplemental census, use the neighbor’s names on the supplemental census to see if you can find them on the regular census and thus the person you are looking for.