Dear Mr. Elliott,
Thank you for posting your request on History Hub!
We searched the National Archives Catalog and located Copies of Letters Received, 1/3/1801 - 12/31/1884 in the Naval Records Collection of the Office of Naval Records and Library (Record Group 45) that consists of letters received mostly from private citizens and public officials. For more information about these non-digitized records, please contact the National Archives at Washington, DC - Textual Reference (RDT1) at firstname.lastname@example.org.
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 RDT1. We apologize for this inconvenience and appreciate your understanding and patience.
These letters have been reproduced in full as part of National Archives Microfilm Publication No. M124, Letters Received by the Secretary of the Navy: Miscellaneous Letters, 1801-1884. We searched WorldCat and located a listing for this microfilm publication at several libraries. You may wish to contact your local public or university library to inquire about whether they have copies of this publication.
We hope this is helpful. Best of luck with your research!