The New Berlin Gazette on June 6, 1935 had a column on page one about the hamlet of Finksville. One man living at one time in Finksville was Lorenzo VanPelt who was a father to Mary A. VanPelt who was a wife of Charles Lawrence, who ran a hardware store in Morris.
The signature looks like Ada Wilson, Born in 1873 -- maiden name Ada Briggs, mother of Lillian who was the wife of Earl Gage who ran a meat and grocery market on Main St in Morris. She was a nurse and married to Charles Wilson -- who was born in 1846.
To zoom in click on the first link below.
To make the back of the card easier to read I have rotated the image and attached it below.