Dear Mr. Smith,
Thank you for posting your request on History Hub!
We searched the National Archives Catalog and located the Civil Works Map File, 1818 - 1947 in the Records of the Office of the Chief of Engineers (Record Group 77) that may include a map of this area. Some maps have been digitized and are available using the Catalog but we were unable to locate digitized maps for Round Grove Creek District. For more information about the non-digitized maps, please contact the National Archives at College Park - Cartographic (RDSC) at email@example.com.
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 RDSC. We apologize for this inconvenience and appreciate your understanding and patience.
Additionally, you may wish to contact the Library of Congress - Geography & Map Division, the Missouri State Library, the Missouri State Archives, the Missouri History Museum, as well as local city and county historical societies, libraries, museums, and similar institutions.
We hope this is helpful. Best of luck with your research!