Detail map of Bethesda, Maryland, United States Overview map of Bethesda, Maryland, United States

A: Bethesda, Maryland, United States

Medline is Operational at the U.S. National Library of Medicine

10/1971

In October 1971 Medline (Medical Literature Analysis and Retrieval System Online), a literature database of life sciences and biomedical information, was operational at the National Library of Medicine. It was initially a database version of the printed Index Medicus.

By 2019 Medline contained "more than 25 million" records from approximately 5,000 selected publications covering biomedicine and health published from 1950 to the present.

Timeline Themes