The collection contains handwritten manuscripts and drafts, both in Basque and English, of Joan Errea's published and unpublished work, plus a small selection of memorabilia.

Various bookmarks on four different designs, Basque Library pamphlets, some of exhibitions, pamphlets regarding Basque Databases and Basque Library's rules, a thin magazine showing recently graduated library student workers and a poster from 'Bertsolari' documentary projection.

Newspaper clippings about Basque issues from Idaho and Nevada.

Original personal correspondence of Laxalt Family.

34 cassettes; 11 of them are from «246 Voices in Montana’s past» collection and the other 23 are interviews. It also includes a newspaper supplement.

Clippings about Louis Irigaray. It also includes a copy of “A Shepherd Grows” by Louis Irigaray and Theodore Taylor.

6 magazines: 'PIT Traveler', 'Nevada', 'Deep Down Inside Arizona Highways', and 'High Desert Journal', last two containing each one an article regarding Basques in the U.S. It also contains the journal 'Sheep Trails', New Mexico Genealogist Society's journal and an article taken from 'Pays Basque' magazine. Sheep ranching in the land of the lakes', 'edible Reno-Tahoe' magazine, four copies of 'Canadian Geographic' and 'Faces' magazine

Four magazines containing articles about Basques whale hunting in America and about Basques Amesti and Martin Aguirre. It also contains newspapers clippings donated by Celestine Paternain.

Copy of 'Montana, the Magazine of Western History' from winter 2016, contains an article written by Iker Saitua regarding Basque sheepherders. It also contains a letter from magazine's photo director Christy Eckerle and advertising information.

Four National Geographic Magazine copies containig articles about Basques, Basque Sheepherding and Basque Whale Watching.