Dear Mr. Gersel,
Thank you for posting your question on History Hub!
We searched the National Archives Catalog for “ME-262.” The search produced the following results. We would especially recommend looking into the records located in the series titled “Central Decimal Correspondence Files, 1919-1950” in the Records of U.S. Air Force Commands, Activities, and Organizations (Record Group 342) as it may contain records of interest to you.
The main U.S. efforts to study the ME-262 after the war were conducted by Technical Intelligence, T-2, Air Material Command, Wright Field, Dayton. We searched the National Archives Catalog for “Air Material Command” and “Technical Intelligence” in the Records of Headquarters U.S. Air Force (Air Staff) (Record Group 341). We also used these keywords to search for any records in Record Group 342. The search results can be found here and here. Please contact the reference unit listed in each series description.
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 the various NARA reference units. We apologize for this inconvenience and appreciate your understanding and patience.
We hope this information is useful. Best of luck with your research!