Hello Mr. Gibson, and thank you for submitting your question to History Hub!
We suggest you review the National Archives page concerning Vietnam era electronic records, which include digital physical media and data files.
An advanced search in the National Archives Catalog for “Vietnam,” “Data Files,” and limited to 1960-1969 resulted in 638 hits, 42 of which are records series.
In addition to examining the links above, we suggest contacting the Electronic Records Reference Services (RDE) at this address email@example.com for further assistance.
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 RDE. We apologize for this inconvenience and appreciate your understanding and patience.
Thank you again for submitting your question to History Hub!
Thanks for your help. This kind of research is new to me so I will definitely be contacting that email address.