The date of the Nodaway County MO census is Sept 5 1870.What dates do you have for the one in Nemaha KS?
It is interesting!On the 1870 census Oscar S.Briggs is 29 and from New York.His wife is Sallie A. 24 of MO.With them are their child George who is 1 yr old and a Silas M. or W. who is 27 and he is listed as a Stock Trader from New York.
My research has taken a different turn so I don't think the Briggs name is connected but you never know.
I'd be interested to know what you find out as O. S. Briggs is a neighbor to the Horatio Pool I'm researching.