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Black Hawk NYPL bGF ZF. en Black Hawk nypl org Scan by NYPL Black Hawk Collier's Rocky Mountain Scenery Central City Colo The Miriam and Ira Wallach Division of Art Prints and Photographs Photography Collection ccbbcfffdabc GFZF Robert Dennis collection of stereoscopic views dedadeeaa NYPGF repo nypl org Check categories April