When hunting for a cemetery a map is useful. This map was created by the Illinois Department of Natural Resources by Kathleen Brown. I haven’t found a bad location but I was amused to learn the state thinks the cemetery in Mt. Pulaski is unnamed. It’s Mt. Pulaski Cemetery.
Some cemeteries have other names. For example, Reece is generally called Shellhammer for the man who purchased the land after the Reece family moved to Kansas.
You can see a larger version of this map here and a list of all the cemeteries with locations here.
This is a map of Logan County from 1876. It’s from the David Rumsey Collection of historical maps. In addition to being a map of the county the townships and sections are marked and numbered. It can be used to locate land purchases for early settlers from the Government Land Records Office. For whatever reason, a few 1876 land owners are marked on this map.