New Mexico author and rancher. The collection includes family correspondence, general correspondence, personal files, literary files, political files, publications, and photographs. Also included are a partial manuscript of No Life for a Lady and a complete manuscript of Satan's Paradise.

This collection consists of one photoprint of a handwritten document, entitled "Confundis de la Historia del Pintoresco Pueblo de la Mesilla," by Colonel Albert Jennings Fountain. The document outlines the role of the town of la Mesilla in the history of New Mexico, with regard to the Treaty of Guadalupe Hidalgo, the Gadsden Purchase, and the Civil War.

The Albert W. Thompson Papers contain news clippings, articles, and manuscripts about the early days in the West, specifically, Clayton, Union County, and northeastern New Mexico. Most of the materials were written by Thompson, however, some of the newspaper columns were written by others. Black Jack Ketchem is a prominent subject within the collection. Miscellaneous materials include flyers, correspondence, a map, and notes.

Collection consists of research matericals including correspondence between Tomas Jaehn and members of the Gschwind family, picture descriptions and family history regarding the Balthasar Gschwind family and its ties to Oscuro, New Mexico homesteading.

This collection is comprised of the manuscript titled, "The Deserving and the Lucky" by Bertha S. Dodge. Following minimal changes, this manuscript was published by the University of New Mexico Press in 1980 under the title, The Road West, Saga of the 35th Parallel, which recounts reports of those who have passed by what is now El Morro National Monument.

One 1861 letter from David J. Miller of Santa Fe to his niece Laura P. McCord of Mississippi, and one typescript of the letter. Miller gives a brief description of New Mexico and its people.

This is a collection of correspondence, photos, newspaper clippings and articles about Elfego Baca as retained by his family after his death and collected in subsequent years. They provide a view of Baca’s political, business and family life beyond the well-known 1884 gunfight in Socorro County.

Collection contains photographs from Fabiola Cabeza de Baca Gilbert's childhood and work as a school teacher.

This collection is comprised of two leather-bound ledgers of Dr. Finis Ewing Kavanaugh, merchant, sutler and physician attached to military posts at Fort Fauntleroy/Fort Lyon and Cubero, New Mexico.

This small collection consists primarily of reminiscences of Flora Spiegelberg, including original typewritten manuscripts of brief articles and published articles. Also included is a manuscript about Flora Spiegelberg and the Spiegelberg family written in 1975. The articles by Spiegelberg primarily concern life in the Territory of New Mexico in the late 19th century. Other articles are about New York City where the Spiegelbergs lived after leaving New Mexico.

This collection is comprised of the typed transcription of a series of letters written by James Gillespie Hamilton to his wife, Cornelia Bernard Hamilton during an overland trip from Westport, Missouri to California; August 26, 1857-April 15, 1858. Letters are copied and typed by his granddaughter, Katherine Jones Moore, and prefaced with a brief family history.

The James J. Webb Correspondence consists of ten hand-written letters discussing business practices and salaries related to Webb's trading business and politics in New Mexico.

Collection consists of a typescript of Webb's journal entitled "Memoirs of James J. Webb, Merchant in Santa Fe, New Mexico, 1844." The memoirs describe Webb's business in Santa Fe and his journey across the Santa Fe Trail. Includes materials on two of Webb's business partners, John M. Kingsbury and William S. Messervy.

The collection documents Jerry Williams’ curriculum for the Southwest Institute and research for his homestead land survey in eastern New Mexico.

Photographs and articles from local historian and author Keith Humphries from 1939 – 1988.

The Long Canyon Ranch Collection is focused on the ranch near Taiban, New Mexico owned by the Herlihy family.