My 3GGF, Carey W. LAMBERTSON, was enumerated in the 1900 census in Jackson Township, Hamilton County, Indiana. By the 1910 census he was in the 2nd Ward of the City of Elwood, Madison County, Indiana. So at least I know that sometime between 1900-1910 he moved.
Didn't find exactly what I was looking for, but I did locate the 1916 Directory of Elwood published by the R.L. Polk Co. of Indianapolis, Indiana. In that directory, both Carey and his son, Bert, are listed as living in Elwood
Lambertson Carey (Clara), h 1906 n FIn a later directory, from 1924, published by Calkin-Kelly Directory Company of Binghampton, New York, I located my GGF, Clermon, and his brother:
Lambertson Bert S (Marie), laborer, h 615 n 18th
Lambertson Clemon B (June K) cabtwkr h 1906 North FMy GGF, Clemon, worked for the Sellers Kitchen Cabinet Company in Elwood for many years until it closed. Apparently, so did his brother, Orville. Later in that same year, Orville and his wife were divorced.
Lambertson Orville E (Mary E) cabtwkr h 809 North 16th
This is just a start of some of the early directories that the library had. I also need to dig into the collections at Ancestry.com to see what else I can find for the missing years.