Topographical atlas of Ohio. Ashtabula, Geauga, Lake, Mahoning, Portage and Trumbull counties.
(Pub. by Stedman, Brown & Lyon, Cincinnati. 1872.)
This is the earliest map of it's type to show all lot divisions within the Townships.
For Harpersfield, the township was divided into 160 more or less equal lots. All townships were 5 miles on a side. This meant that each township was 25 square miles. Therefore each township contained 16,000 acres (25 miles times 640 acres per sq. mile). The way each Township was divided was up to the owner of the Township. In Harpersfield each lot was approximately 100 acres.

Clicking on the map will bring up a slight enlargement of Harpersfield Twp. I have highlighted the individual lots, in the Township, owned by Alexander Harper at the time of his death. Note this will be an additional 258K download.