This is just a thought I had about families who come up missing between years.
I do a lot of research in newspaper microfilm, especially before 1900. I have seen several
instances where a family will move to Arkansas, Texas, Kansas, etc... and return a few
years later because they just couldn't make it there. This could cause them to be
missing from the Pike County census one year and back again in the next census.
This actually happened to a family of mine in Warrick county. I finally found them in
Missouri for one census year and then back in Warrick for the next one.
just a thought,
Sandy