This tiny headstone on the North Ridge (not far from the G.A.R. plot) is fairly unique. It includes a photograph of the deceased; such headstone photos are not common in the Rural Cemetery, though I have seen a few other examples in other local cemeteries such as Calvary in Glenmont.
The grave belongs to one John Kolkanis, though his name is spelled "Colcanis" on the stone. He was born in Greece and, at the time of his death, resided at 469 Delaware Avenue (near the corner with Whitehall Road). The burial record lists his cause of death as "Drowned in the Hudson River," but search of local newspapers didn't reveal any any additional details.