“Old Maud” on Youtube by Dan and Jenny Trio:  

Island Lake Historical Society

Lake Zurich Historical Society

Wauconda Area Public Library

Lake County, IL Genealogy

Kisselburg Wauconda Obituaries

Illinois State Historical Society

Illinois Digital Archives

American Association for State and Local History

Wauconda Township

The Encyclopedia of Chicago has an article on the village of Wauconda, with a good summary of the town’s development and history (though I think its somewhat dismissive conclusion that the town is now a “suburban residential area” is Chicago-centric and inaccurate).