爱德华·赫曼

Edward Herrmann

饰：Himself - Narrator

David A. Bell

饰：Himself - John Hopkins University

Daniel P. Jordan

饰：Himself - President, Thomas Jefferson Foundation

Franklin W. Knight

饰：Himself - John Hopkins University

Jon Kukla

饰：Himself - Author, A Wilderness So Immense

James E. Lewis Jr.

饰：Himself - Author, The Louisiana Purchase

Tim L. Smith

饰：French Aristocrat

克莱尔·柯林斯

Carrie Collins

饰：Princess Maria Louise