unfortunate that your post is so old. I just found that Walter in the census, with his mother Bertha Kraft Dodds. That makes his father John Peter Gasser 1858 born in Honey Creek, Sauk, Wisconsin, a son of Ulrich Gasser and Anna Hemmi. Ulrich and Anna were first cousins, Ulrich being the son of George Orion Gasser and Maria Hemmi.
I have much more on their ancestry. If you see this post, look for my database to be up on rootsweb in the next year or so.