I know this is a really old thread, but hopefully this helps. I had a heck of a time finding the Philadelphia Cemetery for some ancestors of mine, so I snapped all the pics I could find:

http://www.findagrave.com/cgi-bin/fg.cgi?page=gr&GSln=Ri...;
http://www.findagrave.com/cgi-bin/fg.cgi?page=gr&GRid=68...

It looks like Edgar is in the Highland Cemetery:
http://www.findagrave.com/cgi-bin/fg.cgi?page=gr&GSln=Ri...;