Dear Ms. Baxter,
Thank you for posting your request on History Hub!
We searched the National Archives Catalog and located 26 record series relating to Fort Sill in various record groups and at various National Archives locations. These records have not been digitized and are not available online. For more information about these records, please email the reference unit listed in the Catalog description.
Due to the COVID-19 pandemic and pursuant to guidance received from the Office of Management and Budget (OMB), NARA has adjusted its normal operations to balance the need of completing its mission-critical work while also adhering to the recommended social distancing for the safety of NARA staff. As a result of this re-prioritization of activities, you may experience a delay in receiving an initial acknowledgement as well as a substantive response to your reference request from the various NARA units. We apologize for this inconvenience and appreciate your understanding and patience.
Additionally, you may wish to contact the Fort Sill National Historic Landmark & Museum and the Comanche National Museum and Cultural Center (CNMCC).
We hope this is helpful. Best of luck with your research!