Dear Ms. Young,
Thank you for posting your request on History Hub!
We searched the National Archives Catalog and located the file Vaughn, Joseph -- Private, Illinois - 87th Infantry, Company A in the series Court Martial Case Files, 12/1800-10/1894 in the Records of the Judge Advocate General (Army) (Record Group 153) that may be of interest to you. We cannot confirm whether or not this is the same Joseph Vaughn you are researching, and these records have not been digitized. For access to and information about these and similar records, please contact the National Archives at Washington, D.C. - Textual Reference (RDT1) at email@example.com.
We also located the series Indexes to the Carded Records of Soldiers who Served in Volunteer Organizations During the Civil War in the Records of the Adjutant General’s Office (Record Group 94) that contains 31 files for individuals named "Vaughn, Joseph". The series Carded Records Showing Military Service of Soldiers Who Fought in Confederate Organizations in the War Department Collection of Confederate Records (Record Group 109) also contains 22 files related to individuals named "Vaughn, Joseph", and there are 2 additional files related to individuals named "Vaughn, Joseph" in the series Papers Relating to Citizens, 1861-1867 in Record Group 109. These records have been digitized and can be viewed online in the Catalog. You may contact RDT1 with any questions you might have about these records.
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.
Finally, you may also be able to use websites like Chronicling America « Library of Congress to find information about Joseph Vaughn in historical newspapers.
We hope this is helpful, and best of luck with your family research!