I'm Bill Baar. The "West Side" is Chicago's West Side. Baar is a Dutch name and my father's side of the family came from Groningen Holland to Chicago's West Side in the 1870s. They settled in the "Groninger Hoek" between Taylor and 16th Streets, and Laflin and Wood.
The Dutch West Siders have been moving West ever since. I may be the frontiersman because I live in Campton Township, Kane County Illinois. That's about as far west as you can go and still buy an Italian Beef. You know you've left metro Chicago when you can't find Italian Beef stands anymore.
My Dad used to take me to Carm's in Berwyn for beef.
And a good book about the Dutch in Chicago is Robert Swierenga's Dutch Chicago.