This collection includes galley proofs, drafts, images, and correspondence for Eldon Chuinard's book, Only One Man Died: The Medical Aspects of the Lewis and Clark Expedition published by Arthury H. Clark in 1979.

This collection includes the research files, drafts, and correspondence with the publisher, Arthur H. Clark, for the book Jefferson's Western Explorations edited by Doug Erickson, Paul Merchant, and Jeremy Skinner, and published in 2004.

This collection includes the bibliographic research files, drafts, and correspondence for the book The Literature of the Lewis and Clark Expedition: A Bibliography and Essays (2003) compiled by Doug Erickson, Paul Merchant, and Jeremy Skinner with essays by Stephen Dow Beckham.

This collection includes galley proofs and edited typescript drafts of M. O. Skarsten's book, George Drouillard: Hunter and Interpreter for Lewis and Clark published by Arthury H. Clark in 1964.

A collections of commemorative stamps, cancellations, and articles issued during the Bicentennial of the Lewis and Clark Expedition.