The best set of books on Ohio rifles that shows both images and biographies is the 5 volume set :
Ohio Gunsmiths & Allied Tradesmen 1750-1950 by Donald Hutslar. I believe the set typically sells for $125.00. The gunsmiths are listed by county.
These volumes were published and sold through the efforts of the Asso. of Ohio Long Rifle Collectors , with updated and more accurate gunsmith info. furnished by Jim Whisker. Rifle pictures were primarily taken by Jim through many years of work.
If you are only interested in a specific gunsmith or County, the specific volume can be purchased individually.