We went to the cemetery last night on a mission to find a headstone for someone on findagrave.com. We didn’t find what we were looking for, but I found a few stones of interest. Most of these are really old or belong to veterans.
Some of the stones were illegible due to wear, or were written in German. I could probably spend a whole day just looking at stones.
无边春色绿门后 
You raised my curiosity, so I wandered around (digitally) a bit myself.
LT John Fossler (Medical Corps, WW1) was born in 1877 Filley, Gage County, NE. I thought he might be a WW1 vet, but he’s not listed in the NE rosters. His selective service registration (draft card) is listed, though. That’s where I found his birthplace.
MM2 George Henry Reimers had the same Rating (Occupational specialty – Machinist’s Mate) as your Grandpa Cox.
Joseph Kratochvil and his family were Czechs, and probably came from Kněžice in Bohemia (Neither Czechoslovakia nor the Czech Republic existed back then. Kratochvil is a good old Czech name.
Me, the genealogist . . .
I thought the Kratochvil stone was interesting because it’s an unusual name (here, at least), and TLK’s former pediatrician had that name.
For some interesting reading, you should look through Highgate Cemetery in London.. I’ve only seen it on findagrave.com, but I definitely have to go there.