adgorn, I found your link with the info on this particular UID. Is your marker on the google map the accurate location of this particular doe? On the Roosevelt side rather than the Canterbury side?
Is the photo in your link from this particular stone? I noticed it didn't have flowers. I wasn't in the area during visiting hours but I will be sure to go soon, and put some flowers on the grave.
http://www.waymarking.com/waymarks/...John_Wayne_Gacy_Oakridge_Cemetery_Hillside_IL
Yes, that waymark is mine, the photo is of this grave and the coordinates are accurate. Easiest access is from the Roosevelt side. I was able to find this location after carefully watching this youtube video: JOHN WAYNE GACY MURDER SITE/VICTIM GRAVESITE - YouTube
I was also able to locate Piest's grave in the All Saints Mausoleum from info on this site: http://www.death2ur.com/john_wayne_gacy_victims_gravesit.htm