Stephenie Ambrose Tubbs is co-author with Clay Jenkinson of The Lewis and Clark Companion: An Encycopedic Guide to the Voyage of Discovery, published in 2003 by Henry Holt and Company. Her book of essays on Lewis and Clark, Why Sacagawea Deserves the Day Off, and Other Lessons from the Lewis and Clark Trail, published in 2008 by the University of Nebraska Press. She also writes on local history in the vicinity of Helena, Montana, where she resides with her husband John.
The holder of two degrees in history from the University of Montana, Stephenie lectures nationally about her experiences and observations on the Lewis and Clark Trail that she first followed in 1976 with her father, the bestselling author Stephen Ambrose. She works with conservation and citizens' groups to preserve and protect the trail and adjoining wilderness areas.
She serves on the boards of the Lewis and Clark Interpretive Center Foundation, the Montana Preservation Alliance, Friends of Montana PBS, and the American Prairie Foundation.