A New Special Exhibit
Coming Summer 2026
Open during regular Museum hours and running through the end of 2026. Free with Museum admission.
Lawman of the Frontier Grosvenor Arthur Porter
The U.S. Marshals Museum invites visitors to explore the remarkable life and enduring legends of Grosvenor Arthur Porter — cousin to Theodore Roosevelt, he was the last United States Marshal for the Southern District of Indian Territory and the first United States Marshal for the Eastern District of Oklahoma.
A lawman, frontiersman, and figure tied to one of America’s most transformative eras, Porter stood at the crossroads of the fading frontier and the rise of a new nation. His story is one of duty, ambition, danger, and reinvention in a rapidly changing West.
A Legendary
Frontier Figure
Through artifacts, photographs, historical accounts, and stories passed down through generations, this summer exhibit examines both the man and the mythology surrounding him.
Visitors will discover how Porter’s life intersected with the closing years of Indian Territory, the birth of Oklahoma statehood, and the evolving role of federal law enforcement in the American frontier.
Not Defined by
History Alone
Over time, stories of courage, conflict, and frontier justice transformed Porter into something larger than life — a figure remembered as much through legend as through documented history.
This exhibit invites guests to explore where those two worlds meet.
Exhibit Highlights
- The life and career of Grosvenor Arthur Porter
- The final years of Indian Territory
- The transition into Oklahoma statehood
- Frontier law enforcement and federal authority in the West
- Porter’s connection to Theodore Roosevelt
- The stories, folklore, and legends that followed him long after his lifetime