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JACOB'S POOL COLORADO BASIN COLORADO RIVER NARA .tif Scope and content General notes Local identifier WA Smithsonian Institution NARAAuthor Bell William Photographer File JACOB'SPOOL COLORADOBASIN COLORADORIVERNARA tif tif File JACOB'SPOOL COLORADOBASIN COLORADORIVERNARA NARAcooperation PDUSGov NARA TIF images with categorized