Box 57Dates estimated

  • If no specific dates can be found for items in the collection, but a specific year or years can be estimated because of material in the manuscripts or in accompanying material, place a question mark after the estimated date and place date information in square brackets
    • Henle, Werner; Henle, Gertrude. Growing up with virology: an annotated bibliography of Werner and Gertrude Henle. [1986?]. 4 items; 0.2 linear feet. Located at: Modern Manuscripts Collection, History of Medicine Division, National Library of Medicine, Bethesda, MD; MS C 460.
    • American College of Cardiology. Oral history of twenty-five years of American cardiology. [1949-1974?]. 6 items. Located at: Modern Manuscripts Collection, History of Medicine Division, National Library of Medicine, Bethesda, MD; MS ACC 398. Accompanied by: 5 audiocassettes.
  • If no date can be found nor can a specific year be estimated, but an approximate time can be determined based on material contained in the manuscripts themselves or in accompanying material, place the word circa and the approximate date or dates in square brackets
    • Loewi, Otto. Otto Loewi papers. [circa 1935-1956]. 1 box. Located at: Modern Manuscripts Collection, History of Medicine Division, National Library of Medicine, Bethesda, MD; MS C 409.
    • Alchemy collection [microfilm]. [circa 1700s]. 1 reel: black & white, negative, 35 mm. Located at: Manuscript Division, Library of Congress, Washington, DC; MSS98426. French, German, Italian.
  • If no date can be found, estimated, or approximated, use [date unknown]

From: Chapter 14, Manuscripts and Preprints

Cover of Citing Medicine
Citing Medicine: The NLM Style Guide for Authors, Editors, and Publishers [Internet]. 2nd edition.
Patrias K, author; Wendling D, editor.
Bethesda (MD): National Library of Medicine (US); 2007-.

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