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The Switchback near Central NYPL bGF ZF. en The Switchback near Central nypl org Scan by NYPL The Switchback near Central Denver Colo The Miriam and Ira Wallach Division of Art Prints and Photographs Photography Collection adacfabdabc GFZF Robert Dennis collection of stereoscopic views deeadeeaa NYPGF repo nypl org Check categories