This is a rough Google Map showing what I think is the location of Barbara Haase's lot in the town of Warsaw, Hancock County, Illinois. As time goes on, I'm using Google Maps more and more to plat out things. Keep in mind that Google Maps are modern and that most genealogists need maps contemporary to the research problem. Modern maps are still very helpful though, particularly when locating cemeteries and other potential sources of records.
I'm still working on a few details to make certain I have the right location, but I'm pretty certain this is accurate.
This week's edition of Casefile Clues discusses land transactions for the lot after Barbara's death.