Catalogue of the Library of the Surgeon General's Office, United States Army. 3 vols.

The first formal published catalogue of the ancestor of the US National Library of Medicine, prepared under the supervision of John Shaw Billings. Vols. 1-2 represented an author catalogue A-Z. Vol. 3: Supplement: Anonymous, transactions, reports, periodicals.

In his preface Billings wrote that the library contained "about 25,000 volumes, and 15,000 single pamphlets, and the present catalogue gives about 50,000 titles exclusive of cross-references...." Digital facsimile from the Internet Archive at this link.