I have a similiar sounding issue to the one you replied to. I have come across a painting that says it is by Paul Detlefsen and it is called Horse and Buggy Days, also. Are you aware of any reproductions made of this piece of art? The strange thing about it is that you can feel the brushstrokes on the canvas. You can also run your finger across the signature and you can feel the bumps in the letters. I was just curious if you knew.