Dear Ms. Gardner,
Thank you for posting your request on History Hub!
We searched the National Archives Catalog and located 4 file units & 2 items in the Records of the Bureau of Indian Affairs (Record Group 75) that pertain to the Creek Indians and the Civil War. The 2 items are digitized and are available using the Catalog. For information about the non-digitized file units, please contact the National Archives at Washington, DC - Textual Reference (RDT1) at email@example.com.
We also located 2 series in Record Group 75 that pertain to the “Five Civilized Tribes” since the Creek Nation was classified as one. For information about these records and any additional records that include the Five Civilized Tribes and the Creek Agency, please contact the National Archives at Fort Worth (RM-FW) via email at firstname.lastname@example.org.
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 RDT1 and RM-FW. We apologize for this inconvenience and appreciate your understanding and patience.
We hope this is helpful. Best of luck with your research!