1. Report of a Geological Survey of Wisconsin, Iowa, and Minnesota; and incidentally of a portion of Nebraska Territory, 1852, page 196. 2. Figure 64, page 127, South Dakota School of Mines Bulletin 13, November 1920. 3. Report of a Geological Survey of Wisconsin, Iowa, and Minnesota; and incidentally of a portion of Nebraska Territory, 1852, between pages 196 and 197. 4. DINPS (November 20, 1967). Note: The Badlands Natural History Association is grateful to Mr. Leonel Jensen, local rancher, for help in locating the site of this trail. It is in S-1/2 sec. 30, T. 1 S., R. 15 E. of the Black Hills Meridian. 5. South Dakota School of Mines and Technology, Rapid City, South Dakota. 6. The Rapid City Daily Journal, Monday, September 27, 1965. 7. Louis Blumer, Wall, South Dakota (about 1911). 8. A.E. Johnson, Interior, South Dakota (December 1906). 9. Ted E. Hustead, Wall Drug Store, Wall, South Dakota (1907). 10. Plate No. 56B, South Dakota School of Mines Bulletin 13, November 1920. 11. Keith Crew, Interior, South Dakota; from a postcard mailed June 5, 1909. 12. Leonel Jensen, Wall, South Dakota (fall 1908; Louis J. Jensen family). 13. Leslie Crew, Interior, South Dakota; from a postcard mailed December 19, 1908. 14. Rise Studio, Rapid City, South Dakota. 15. Black Hills Studios, Inc., Spearfish, South Dakota. 16. DINPS. 17. DINPS. 18. DINPS (December 6, 1964). 19. DINPS (1938). 20. DINPS (about 1934). 21. DINPS (June 1941). 22. DINPS (June 7, 1950). 23. DINPS. 24. DINPS (spring 1964). 25. DINPS (August 1960). 26. DINPS (September 16, 1959). 27. DINPS (summer 1962). 28. DINPS (July 1962). 29. DINPS (January 9, 1964). 30. DINPS (January 25, 1964). The Badlands Natural History Association wishes to extend its sincere thanks to these individuals and organizations for granting the association permission to use the illustrations. APPENDIX D Footnotes and References All references used in compiling this history are on hand in the Badlands National Monument library or files for further study. Where actual reports, correspondence, or books were not available, copies have been obtained from such sources as the National Archives, Library of Congress, National Park Service, and various public and university libraries. For the sake of simplicity, the following abbreviation has been used where appropriate: PNC—copies of items from the Peter Norbeck Collections, University of South Dakota, Vermillion, which pertain to the establishment of Badlands National Monument are in a bound volume in the national monument library. [1]Dee C. Taylor, Salvage Archeology in Badlands National Monument, South Dakota (Missoula: Montana State University, 1961), pp. 79, 80. [2]Ibid., p. 75. [3]Ibid., p. 80.