Dear Mr. Basha,
Thank you for posting your request on History Hub!
We searched the National Archives Catalog and located Government Publications, 1861 - 1992 in the Publications of the U.S. Government (Record Group 287) that may include a copy of Military Specification MIL-W-3818A filed under SUDOC number D1.12 (Military Specifications) somewhere in Entry UD 14, Boxes D98-D106. For more information, please contact the National Archives at College Park - Textual Reference (RDT2) via email 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 RDT2. We apologize for this inconvenience and appreciate your understanding and patience.
Please note that according to U.S. Army disposition schedules, pre-November 1966 contracts and the great majority of the correspondence relating to them were systematically destroyed by the Army once their administrative use ended.
We hope this is helpful. Best of luck with your research!
Thanks so much. I'm local to College park, so I can drive there and see what I can find once they reopen.