If you looked at the album on Photobucket as recently as today or yesterday, I added some photos to it. As for the area, mainly Ohio, specifically Stark County. I took some notes onthe photos. The first one of the two girls has 'I.N. Conrad, Photographer, Minerva O.' on the back as do several others, though the third one of the baby has 'J.N. Conrad' I do believe that could be a misprint or a brother or partner of I.N.One photo has 'Port C. Baxter, Carrollton, O. on the back, another has 'J.W. Gould, Artist, Carrollton, O.' STAMPED on the bottom front and another has 'Gould & Baxter's Unexcelled Pictures, West Side Public Square Carrollton, Ohio' on the back.
The Wilhelms in my family all lived for nearly all their lives in either Stark County, Carroll County or Columbiana County, which is where Minerva is located (believe it or not its in the middle of all three counties).