Dear Ms. Callis,
Thank you for posting your request on History Hub!
The citations you gave are for documents in the record series Central Decimal Files, 1910 - 1963 in the General Records of the Department of State (Record Group 59). These documents are not available online. For access to these files, please email the National Archives at College Park - Textual Reference (RDT2) at firstname.lastname@example.org and provide specific dates of interest.
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.
If you have not already done so, you may wish to review the Foreign Relations of the United States (FRUS) series published by the Department of State for documents related to your topic.
We hope this is helpful. Best of luck with your research!