I went through my collection and dug up some Chicago Czech soccer memorabilia. mcnessa, if you use any of these photos please credit them to The Frank S. Magallon Collection.
Here is a neat photo of the Czechoslovak Legionnaires Soccer Team in 1927. I believe this thread unlocked the mystery for me as to where this photo was taken. It looks like the industrial buildings that are in the background of Sparta Stadium on 21st & Kostner. The photographer, Frank Boudnek, lived a stones throw away at 4243 W. Cullerton Ave. (20th St).
Here is another photo I have of the Sparta soccer team. On back it has the game info: Sparta of Chicago vs. Hakoah of Wienn. White Sox Field Chicago, ILL. May 19th, 1926. All of the players names are written on back as well.
This is a program for Sparta from Sept. & Oct. 1926. The book is filled with some basic info and a lot of ads for Czech owned businesses in Lawndale, Berwyn, and Cicero.