There is Another Way, Maybe

Finding a burial site through a different website called
Putting a name in the box below will take you away from the Sunnyside Cemetery website to the "Find A Grave" website.  That website often has more information about the person buried and even GPS coordinates sometimes to help locate them.  The Google Earth app will help you locate the grave by putting in the gps coordinates, if they are noted.   Find A Grave does a nice job of providing a picture of the headstone or marker.  If there are no GPS coordinates then you will want to come back to Sunnyside Cemetery to use its grid system to find the burial site.  
Once into that site you must go out of it to go back to Sunnyside's website.