I have four circa 1910 postcards of West Side Park from the Elwood Scharf collection. Elwood was mainly a postcard and exhibit card collector.
He collected every variation. These four, which were issued in
1908 (2), 1910 and 1912 are examples of this.
This is the first of four:
1908 Postcard - West Side Ball Grounds- Chicago by
BN2CARDZ Collection, on Flickr