Lewis brought along a small reference library often called the Traveling Library. Presented here are pages with information about a few of these books.
The Astronomy Notebook
Lewis's workbook
by Robert N. Bergantino
Known now as the “Astronomy Notebook,” this extraordinary document has been an obscure and often neglected detail in the history of the Lewis and Clark Expedition. Transcribed in full with commentary by Robert Bergantino.
Du Pratz’s History of Louisiana
Lewis's reference book
by John C. Van Horne
What was it about du Pratz’s History of Louisiana that so interested Lewis? The book not only provided geographical information, it was the model that Lewis and Clark were to follow when reporting to President Jefferson.
Kirwan’s Elements of Mineralogy
The captain's field guide
by David D. Alt, Joseph A. Mussulman
As a reference, Lewis purchased the second edition (1784) of Richard Kirwan’s Elements of Mineralogy. Although Lewis and Clark had the book at hand throughout the expedition, its usefulness as a field guide was limited.
The Articles of War
Rules for soldiers
by Joseph A. MussulmanThe expedition’s enlisted men were obliged to comply with the basic military rules and regulations contained in two distinct official documents that had been written in the initial heat of the Revolutionary War.
Mackenzie’s Canada Crossing
A role model for Lewis and Clark
by Arlen J. Large
He was the first literate traveler to cross the North American continent north of Mexico, beating Meriwether Lewis and William Clark by nearly 12 years. The Lewis and Clark journals often echo Mackenzie’s journal.
Measuring Heights and Distances
From Owen's Dictionary
by Joseph A. Mussulman
This article shows methods for measuring heights and distances as described by Owen’s Dictionary of Arts and Sciences (1754), a book in the expedition’s traveling library.
For more about the Traveling Library, see Stephen Dow Beckham, Doug Erickson, et al., The Literature of the Lewis and Clark Expedition: A Bibliography and Essays (Portland, Oregon: Lewis & Clark College, 2003).
Experience the Lewis and Clark Trail
The Lewis and Clark Trail Experience—our sister site at lewisandclark.travel—connects the world to people and places on the Lewis and Clark Trail.
Discover More
- The Lewis and Clark Expedition: Day by Day by Gary E. Moulton (University of Nebraska Press, 2018). The story in prose, 14 May 1804–23 September 1806.
- The Lewis and Clark Journals: An American Epic of Discovery (abridged) by Gary E. Moulton (University of Nebraska Press, 2003). Selected journal excerpts, 14 May 1804–23 September 1806.
- The Lewis and Clark Journals. by Gary E. Moulton (University of Nebraska Press, 1983–2001). The complete story in 13 volumes.
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