 GP Misc 3-1 Later Pleistocene Waters NY State.jpg ¹ Glacial Maps Later Pleistocene Waters in NY State, 1918 Illustrations, History of the Genesee County p101. Illustrations courtesy Gerda Peterich. Cobblestone Museum.
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 GP Misc 1-1 Lake Ontario Shore Cobblestones N.jpg ¹
|  GP Misc 2-1 Lake Ontario Shore Cobblestones N.jpg ¹ |  GP Misc 4-1 Lake Ontario Shore Cobblestones N.jpg ¹ |
| The shores of the southernmost Great Lakes were a plentiful source of waterworn cobblestones for the decorative outer veneer of exterior cobblestone structure walls. | ||
