Dear Mr. Clark,
Thank you for posting your request on History Hub!
We searched the National Archives Catalog and located 8 record series in various record groups relating to field hospitals in Vietnam. Depending on the types of information you are searching for, there may be additional relevant records in other series. These records do NOT include information about individual patients. For more information about these records and other Vietnam-era military records, please contact the National Archives at College Park - Textual Reference (RDT2) at Archives2reference@nara.gov. When you email RDT2, please be as specific as possible about your research needs.
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 RDT2. We apologize for this inconvenience and appreciate your understanding and patience.
We hope this is helpful. Best of luck with your research!