I was not sure since it looked as if family settled in Canada and seemingly some/most stayed there. Then I found this:
Name: George E Wolf
Birth Date: 5 Apr 1896
Gender: Male
County: Bon Homme
Father's Name: Edward Wolf
Mother's Name: Louise Helweg
File Date: 26 Oct 1935
Why did it take decades to file birth cert in US?
Will try to pull and post family pic.
I actually registered my own birth and my brother's birth when I was 39. My parents had never registered us. I was able to get my drivers licence and get married with a statutory declaration but when I wanted to get a passport, I had to have a valid birth cert.
Maybe the same thing happened to him.