How do I find the gravesite of my grandparents

There is an office there and they are most helpful. With a cell phone, they will even walk you to it.

If the first office you try is closed, try one of the other 2 because they open on different days. There are 3 offices at Waldheim, 1 on Harlem and 2 on DesPlains. You can usually tell which one is open by the cars parked by it. Saturday's are closed, of course. The staff is wonderful and will give you a map with directions.

There's 2 different companies at the cemetery , Waldheim and Silvermann and Weiss