Sample numbers and description from Winchell's entries into the University of Minnesota's General Museum registrar.
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Sample 573
Sample 573 - Agatized Wood (possibly from Fort A. Lincoln, Dakota)
longest dimension - 5 cm
Sample 2226
Sample 2226 - Lignite from "Ludlow's Cave", Dakota collected on July 11, 1874
longest dimension - 8 cm
Sample 2219
Sample 2219 - Siderite [Cretaceous] from Castle Butte, near Black Hills, collected on July 14, 1874
longest dimension - 8 cm
Sample 2213
Sample 2213 - Gypsum [Permian - Triassic Spearfish Fm] from Redwater Valley, Black Hills, collected on July 21, 1874
longest dimension - 9.5 cm
Sample 2217
Sample 2217 - Red Sandstone from Redwater Valley, Black Hills, collected on July 21, 1874
longest dimension - 18.5 cm
Sample 2208
Sample 2208 - Limestone from Heeng-ya-ka-ga, Black Hills, collected on July 23, 1874
longest dimension - 11 cm
Sample 2216
Sample 2216 - Sandstone, Pinkish [Pennsylvanian - Permian Minnelusa Fm] from Minnelusa Valley, Black Hills, collected on July 25, 1874
longest dimension - 11 cm
Sample 2202
Sample 2202 - Sandstone from Castle Valley, Black Hills, collected on July 26, 1874
longest dimension - 11 cm
Sample 2211
Sample 2211 - Limestone The great limestone formation of the Black Hills [Mississippian Pahasapa Ls] from Castle Valley, Black Hills, collected on July 26, 1874
longest dimension - 10 cm
Sample 2289
Sample 2289 - Potsdam Sandstone with Lingulepis from Castle Valley, Black Hills, collected on July 27, 1874
Sample 2206
Sample 2206 - Garnetiferous Mica Schist from Park Country, Black Hills, collected on July 29, 1874
longest dimension - 8 cm
Sample 2205
Sample 2205 - Felsite [orthoclase] from Harney's Peak, Black Hills, collected on July 31, 1874
longest dimension - 10 cm