Guide to American Medical Biography

Index Medicus (1879-1926), edited by John Shaw Billings, Robert Fletcher, et al. F. Leypoldt, Carnegie Institution, etc. 45 volumes in 3 series; 1879-1899, 1903-1920 including war supplement 1914-1917, (1921-1926). WorldCat Record
HathiTrust Version (1879-1922)
Subject arrangement with author indexes.

Bibliographia medica (1900-1902), ed. by Marcel Baudouin. Institut de Bibliographie, Paris, 3 volumes. WorldCat Record
HathiTrust Version
Issued during suspension of Index Medicus (1899-1902).

Quarterly Cumulative Index to Current Literature (1916-1926). American Medical Association, 12 volumes. WorldCat Record
HathiTrust Version (1916-1922)
alphabetical dictionary arrangement.

Quarterly Cumulative Index Medicus (1927-1956) American Medical Association. 60 v. WorldCat Record
HathiTrust Version (Incomplete)
--Dictionary arrangement.

Current List of Medical Literature (1941-1959). Army Medical Library; Armed Forces Medical Library, 36 volumes. WorldCat Record
HathiTrust Version (1941-1958)
Journal articles indexed; table of contents arrangement with author, subject indexes; use jointly with QCIM since indexed Journals not the same.

For more on early medical bibliography:

The development of medical bibliography, by Estelle Brodman. Washington: Medical Library Association, 1954, 226 p. WorldCat Record
HOLLIS Record
HathiTrust Version