To [email protected], I'm pretty sure I just saw Heart Prairie Cemetery notations on the FHL film 1698015, items 10-14--I'm doing the item #'s from memory; I know for sure Oak Grove is Item 14) I looked at this film for Oak Grove Cemetery, but before I got to Item 14, there are several other cemeteries in Walworth County that were noted by Fred Kraege in the 1990's. Here's another film from the FHL that lists Heart Prairie Cemetery: http://www.familysearch.org/Eng/Library/fhlcatalog/supermainframeset.asp?displ ay=titledetails&titleno=657511&disp=Wisconsin+cemetery+records%20%20& columns=*,0,0 Good luck! Susi Godfrey