- First Sister Lake, 1942 map, DNR
- Dolph Nature Area map (PDF)
- Dolph Park, Mike Ingels, The Erie Hiker weblog, April 2008
Farther north, a visitor finds the largest lake, First Sister Lake. The trails lead to an overlook on top of a small hill. A bench makes for a nice resting stop. I was serenaded by Canada geese as I observed the scene.