Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
mostly surface deposits.
Rochester shale
Irondequoit sh
Williamson shale
Wolcotts.
Iron ore
Genesee Gorge
from Steel bridge.
Rochester N. Y.
18306
FEB 2 1914
DEPARTMENT OF MINES
GEOLOGICAL SURVEY
PHOTOGRAPHIC DIVISION.