From private archive to public trust.

The Semple family's records — letters carried west, photographs taken on the porch, ledgers kept by lamplight — were preserved across more than a century by descendants who recognized their quiet importance. What began as boxes in an attic became a working archive, and in time, a museum.

The foundation was established to ensure that these materials would no longer rest in private hands, but be conserved, studied, and offered freely to the public. Today the Semple Family Museum Foundation operates as a small but devoted institution in south Tulsa.

We believe that the texture of a single family's record can illuminate the broader story of a place — and that history, kept well, belongs to everyone who lives among it.

Sepia family portrait

What we hold ourselves to.

The foundation exists to preserve, interpret, and share the historical record of the Semple family and the heritage of Tulsa, Oklahoma.

🏛️
Preservation

Conserving fragile records with archival care so they endure for the next generation.

📖
Education

Sharing primary sources with students, researchers, and curious neighbors alike.

🤝
Community

Inviting Tulsans into a quiet, welcoming space to gather around shared history.

🌿
Heritage

Honoring the people, places, and objects that shape our collective memory.

Nonprofit Status: The Semple Family Museum Foundation is a registered 501(c)(3) nonprofit organization. EIN: 82-6620414 — Contributions are tax-deductible to the extent allowed by law.

Board of Directors

MA
Margaret A. Semple
Board Chair
HW
Dr. Howard E. Whitfield
Vice Chair
EB
Eleanor Briggs
Secretary
JC
James T. Calloway
Treasurer
DO
Rev. Daniel Ostrander
Trustee
CM
Clara Mendoza
Trustee

A Timeline

1882
The Semple family settles in Indian Territory near present-day Tulsa.
1947
Family papers are first cataloged by descendants in a private collection.
1998
An informal study room opens to local historians by appointment.
2018
The Semple Family Museum Foundation is incorporated as a 501(c)(3).
2022
The current Evanston Circle galleries open to the public.
2026
The conservation lab and youth education program are launched.