Handwritten and signed letter, dated 16 July 1846, and composed at the "Headquarters Morm. Batt. U.S. Volunteers." Allen writes about the march to California and the necessity of protection against Indians. On the reverse of Allen's letter is found a handwritten letter, dated 21 July 1846, and signed by R. B. Mitchell, "Indian Agent." The item was composed at "Point aux Poules." Mitchell praises the conduct of the emigrating Mormons in general and with the Indians in particular.

Handwritten copy of a letter appealing to the president of the United States, James K. Polk. The item was copied in 1890, but the original was dated 1 June 1846. The letter states that the Mormons have been persecuted and appealed for aid. It is believed that Polk's call for volunteers to fight in the war with Mexico was an answer to this request. The "Mormon Battalion" was formed in consequence.

Handwritten letter and a typescript. The letter was written at Fort Levenworth on August 7, 1846 to Butterfield's mother and deals with the "Mormon Batallion," with his personal feelings toward the Mormon Church, and quotes from his patriarchal blessing.

Handwritten and signed letter written at Santa Fe, New Mexico and addressed to Carson's "Honored old friends" in Howard County, Missouri. Carson briefly recounts experiences and news about the war including the tremendous death toll from disease, the putting down of an "insurrection," and the activities and battles of General Alexander William Doniphan on the way to El Paso, Texas.

Photocopies of handwritten and printed receipts, wills, correspondence, royal decrees, proclamations, pronouncements, grants, certificates, reports, licenses, orders, inventories, petitions, claims, and requests. The items were created mainly by New Mexican government officials and persons connected with local and territorial governments of that area.

Handwritten and signed letter, dated November 18, 1846, and addressed to Benjamin Cooper of Saline County, Missouri. Cooper writes about the activities of the United States Army under the command of A. W. Doniphan.

Handwritten and signed letter, dated August 18, 1848, and addressed to Col. George Talcott, "Chief of Ordnance." Fremont writes concerning "vouchers for disbursement in the Ordnance Department" for the campaigns in California for 1846 and 1847.

Contains two journals. One journal, written by E. B. Hubbel, during the Mexican American War. The second journal includes a continuation of E. B. Hubbel's writings, some Mexican Treasury records, and the journal of Frank. D. Hubbel during the American Civil War. Materials dated 1836-1862.

Handwritten diaries in pencil and ink kept from 17 Aug. 1846 to 1 May 1847. Hughes writes about the "Doniphan Expedition" into New Mexico. The item was published in Willima E. Connelley's "Doniphan's Expedition" in 1907.

Scrapbook largely comprised of newspaper clippings relating to the United States war with Mexico, 1846 to 1848. Most of the items were clipped from newspapers of the time. The materials relate to the course and outcome of the war and to the personalities involved. Some of the items are in Spanish. The collection is believed to have been created by a Francis Kuhn.