Forgive the typo, the full name is actually Doctor Willard Bliss. Yes, his first name was Doctor.
Dear Ms. Vance,
Thank you for posting your request on History Hub!
We searched the National Archives Catalog and located the series Carded Records Showing Military Service of Soldiers Who Fought in Volunteer Organizations During the American Civil War, 1890 - 1912 in the Records of the Adjutant General's Office, 1762 - 1984 (Record Group 94) and located the file unit Compiled Military Service Record of Surgeon and Major Doctor W. Bliss, 3rd Michigan Infantry Regiment. These records have been digitized and can be viewed online using the National Archives catalog. We also located the series Letters Received, 1863 - 1917 in Record Group 94 which contains the file unit Consolidated Military Officer's File of Colonel Willard Bliss, Surgeon. Additionally, we located the series Field Records of Hospitals, 1821 - 1912 in Record Group 94 which may include additional information pertaining to Armory Square Hospital. For more information about these non-digitized records, please contact the National Archives at Washington, DC - Textual Reference (RDT1) at firstname.lastname@example.org.
Next, we located the series Post and Reservation Maps, 1820 - 1905 in the Records of the Office of the Quartermaster General, 1774 - 1985 (Record Group 92) that includes an item for the Plan of Armory Square General Hospital on the Mall. For more information about these non-digitized records, please contact the National Archives at College Park - Cartographic (RDSC) at email@example.com.
Due to the continued impact of COVID-19, you may experience a delay in receiving an initial acknowledgment as well as a substantive response to your reference request from RDT1 and RDSC. We apologize for this inconvenience and appreciate your understanding and patience as we balance mission-critical work and the safety of our staff during the pandemic. Please check NARA’s web page about COVID-19 updates for the latest information.
The National Library of Medicine holds the collection Armory Square General Hospital orders, correspondence, and printed matter 1862-1869 within its Modern Manuscripts Collection, some of which has been digitized and made available online. Additionally, the National Library of Medicine has also digitized the Official medical bulletins relating to the health of U.S. President James Garfield, a record of bulletins written by Doctor Willard Bliss chronicling the health of the wounded President. You may wish to contact their History of Medicine section for additional information about materials pertaining to Doctor W. Bliss or Armory Square Hospital.
You may also be interested in Amanda Akin Stearns’ memoir, The Lady Nurse of Ward E, documenting her time working as a nurse at Armory Square Hospital, which Google has digitized and can be accessed online for free.
We hope this is helpful. Best of luck with your research!
You should also see if you can find the six-volume "Medical and Surgical History of the War of the Rebellion," published by the Office of the Army Surgeon General following the War. It's likely online somewhere, although it may also be listed as "The Medical and Surgical History of the Civil War." It's mostly reports and data, but you may find information on the Armory Square Hospital in there.