Book drafts, correspondence, notices, court transcripts, newspaper clippings, political pamphlets, poetry in English and Spanish, and certificates. The materials relate to Klasner's research for her autobiography, "My Girlhood Among Outlaws," and her biography of John Chisum, "Baron of the Pecos."

Contains correspondence and notes focusing on specific historical information.

Contains items mostly not created nor written by Lilly Klasner, but rather just items owned by her, such as books, maps, souviners, etc.

Contains miscellaneous newspaper clippings, some of them divided topically.

Contains the original handwritten diary of Emma Wartstill (or Waitstill) Mecham Nielson that includes the time period from 1887 to 1916, with diary entries spanning from 1887 to 1897 and financial records spanning from 1914 to 1916. Diary is during the seven-month period Nielson was living by herself with her children in St. George, Utah, her daily activities as a mother and active church member, and her relationship with her fellow plural wife. Dated 1887 to 1916.