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Ravine of the Ammonoosuc White Mts NYPL bGF F. en Ravine of the Ammonoosuc White Mts nypl org Scan by NYPL Ravine of the Ammonoosuc White Mts Rivers Rocks Bridges The Miriam and Ira Wallach Division of Art Prints and Photographs Photography Collection bdecafdabc GFF Robert Dennis collection of stereoscopic views deabadeeaa NYPGF