Great info and pix; have never seen the other areas of Evergreen before. Here's a little more info, including the Cummer's infant, for whom their family mausoleum was constructed. (Have also heard that the swimming pool at Good Shepherd church was a gift from Ninah and Arthur Cummer). Not sure how their infant daughter died, whether or not it was a drowning, not sure why they chose to give a pool.
https://laceupandwalk.blogspot.com/2016/04/walking-tour-of-evergreen-cemetery.html