Keywords: Blue Rock Crystal Mine, Black Hills National Forest. South Dakota. - NARA - 286139.jpg Scope and content Mine entrance in slope sign tractor and rear of automobile General notes 286139 Local identifier Department of Agriculture Forest Service Black Hills National Forest 03/04/1907 - NARA's Central Plains Region Kansas City NREA 400 West Pershing Road Kansas City MO 64108 1938 Record group Record Group 95 Records of the Forest Service 1870 - 2008 Record group ARC 424 Forest Supervisor's Land Files compiled 1924 - 1961 Series ARC 286138 File unit File unit ARC Variant control numbers NAIL Control Number NRE-95-BHNF FSLF -106 Other versions <gallery> File Blue_Rock_Crystal_Mine _Black_Hills_National_Forest _South_Dakota _-_NARA_-_286139 tif tif File Blue_Rock_Crystal_Mine _Black_Hills_National_Forest _South_Dakota _-_NARA_-_286139 jpg jpg </gallery> - Category NARA images of South Dakota with categorized JPGs - NARA-cooperation PD-USGov Mining in the Black Hills Tractors in the United States Unidentified tractors Black Hills National Forest South Dakota in the 1930s 1938 in the United States NARA images of South Dakota Black and white photographs of South Dakota |