 Kevin Costner's the West (2025) (TV Series)-Self - Author, The Character of Meriwether Lewis (8 episodes, 2025) Self - Author, The Character of Meriwether Lewis (8 episodes, 2025) See fewerJohnson County Wars (Jun 30, 2025) Season 1, Episode 8-Self - Author, The Character of Meriwether Lewis Self - Author, The Character of Meriwether Lewis See fewer |
 Sitting Bull (2025) (TV Series)-Self - Historian and Author (2 episodes, 2025) Self - Historian and Author (2 episodes, 2025) See fewerNever Give In (May 28, 2025) Season 1, Episode 2-Self - Historian and Author Self - Historian and Author See fewerNations Collide (May 27, 2025) Season 1, Episode 1-Self - Historian and Author Self - Historian and Author See fewer |
 The American Buffalo (2023) (TV Mini-series)-Self - Historian (2 episodes, 2023) Self - Historian (2 episodes, 2023) See fewerInto the Storm (Oct 17, 2023) Season 1, Episode 2-Self - Historian Self - Historian See fewerBlood Memory (Oct 16, 2023) Season 1, Episode 1-Self - Historian Self - Historian See fewer |
 The Empire Builder: James J. Hill and the Great Northern Railway (TV Mini-series)-Self - Narrator Self - Narrator See fewer |
 Theodore Roosevelt (2022) (TV Mini-series)-Self - Historian and Writer (2 episodes, 2022) Self - Historian and Writer (2 episodes, 2022) See fewerThe Man in the Arena (May 31, 2022) Season 1, Episode 2-Self - Historian and Writer Self - Historian and Writer See fewerThe Great Adventure (May 30, 2022) Season 1, Episode 1-Self - Historian and Writer Self - Historian and Writer See fewer |
 American History Tellers (2022) (Podcast Series)-Self - Guest (1 episode, 2022) Self - Guest (1 episode, 2022) See fewer Lewis and Clark - The Journey and the Journals (May 4, 2022) Season 44, Episode 4-Self - Guest Self - Guest See fewer |
 Into the Wild Frontier (2022) (TV Series)-Self (5 episodes, 2022) Self (5 episodes, 2022) See fewer Jedediah Smith: Scholar and Survivor (Apr 7, 2022) Season 1, Episode 8-Self Self See fewer |
 Benjamin Franklin (2022) (TV Series)-Self, historian (1 episode, 2022) Self, historian (1 episode, 2022) See fewer Join or Die (1706-1774) (Apr 4, 2022) Season 1, Episode 1-Self, historian Self, historian See fewer |
 American Experience (2018) (TV Series)-Self - Writer (1 episode, 2018) Self - Writer (1 episode, 2018) See fewer Into the Amazon (Jan 9, 2018) Season 30, Episode 1-Self - Writer Self - Writer See fewer |
 The Roosevelts: An Intimate History (2014) (TV Mini-series)-Self - Historian (3 episodes, 2014) Self - Historian (3 episodes, 2014) See fewer The Fire of Life (Sep 16, 2014) Season 1, Episode 3-Self - Historian Self - Historian See fewer |
 Why? Philosophical Discussions About Everyday Life (2009–2013) (Podcast Series)-Self - Historian & Scholar / Self - Host (voice) (6 episodes, 2009) Self - Historian & Scholar / Self - Host (voice) (6 episodes, 2009) See fewer The Case for Religious Moderation (Feb 10, 2013) Season 1, Episode 52-Self - Host (voice) Self - Host (voice) See fewer |
 Theodore Roosevelt: A Cowboy's Ride to the White House (2010) (Video)-Self (as Clay S. Jenkinson) Self (as Clay S. Jenkinson) See fewer |
 The National Parks: America's Best Idea (2009) (TV Mini-series)-Self - Historian (2 episodes, 2009) Self - Historian (2 episodes, 2009) See fewer The Last Refuge (Sep 28, 2009) Season 1, Episode 2-Self - Historian Self - Historian See fewer The Scripture of Nature (Sep 27, 2009) Season 1, Episode 1-Self - Historian Self - Historian See fewer |
 Thomas Jefferson (1997) (TV Mini-series)-Self - Historian (1 episode, 1997) Self - Historian (1 episode, 1997) See fewer Liberty: The Age of Experiments/The Pursuit of Happiness (1997) Season 1, Episode 2-Self - Historian Self - Historian See fewer |