Image: Darton 1897 JailRock
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Description: Jail Rock from the west, Morrill County, Nebraska, 1897. Plate 5 in U.S. Geological Survey. Professional paper 17. 1903; plate 7-A in U.S. Geological Survey. Bulletin 612. 1915: Figure 18 in U.S. Geological Survey. Folio 87. 1903.
Title: Darton 1897 JailRock
Credit: U.S. Geological Survey Photographic Library, http://libraryphoto.cr.usgs.gov/
Author: Darton, N.H.
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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