That is a great image! Sorry for being so late to find this post. John Zenk was a German. That building was built after the 1897 fire. It was also the last to stand on the N/E corner of Archer and Willow Springs road. However, the front of the building seen here was removed when the new WSR bridge was put in and Archer was widened. The business was later known as Ziarco's Ice Cream (or the one half of it was anyway) . The building was torn down for the real estate office for those new condos over there on that corner about 10 years ago. As for Czech's in Willow - There were a few I suppose, but most of the old timers were Irish, German, English (East Coast settler families), and a bit later Lithuanians. There are a number of Bohemians out there too.