Dear Mr. McNamara,
Thank you for posting your request on History Hub!
Records regarding the creation of the policies that led to Japanese internment can be found at the Franklin D. Roosevelt Library and Museum, which can be contacted via email at Archives.FDR@nara.gov. The Harry S. Truman Library and Museum also has materials on this topic, and can be contacted via email at email@example.com. The War Relocation Authority (WRA) was a United States government agency established to handle the internment of Japanese Americans during World War II. The majority of the Records of the War Relocation Authority (Record Group 210) are in the custody of the National Archives at Washington, DC - Textual Reference (RDT1), which can be contacted via email at Archives1reference@nara.gov. The War Department Western Defense Command was also involved with the removal of Japanese Americans. These records are included in the Records of U.S. Army Defense Commands (World War II) (Record Group 499). Some of Record Group 499 records are in the custody of RDT1, while others are in the custody of National Archives at College Park - Textual Reference (RDT2). PLease contact RDT2 via email at Archives2reference@nara.gov.
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 presidential libraries and from RDT1 and RDT2. We apologize for this inconvenience and appreciate your understanding and patience.
You may be interested in the following online resources on this topic:
Also, there are many books that have been published on this topic, which may be available through online book stores. In addition, you may wish to check if your local library is providing access to digital materials such as eBooks on this topic.
We hope this information is helpful. Best of luck with your research!