Northwest sprint car champs

I was asked for what I knew about the "big car" (sprint car) champions from the northwest over the years. Here's a little of what I know.

1929 -- George "Swede" Smith
1930 -- Howard Wills
1931 -- Mario Bianchi
1932 -- either Mario Bianchi or "Swede" Smith (points were very close)

It appears from an article from a 1970s issue of Racing Wheels that Mario Bianchi was the 1932 champ. Here's a story, I believe written by Pike Green, on Mario: