school consistently ranks first among medical schools for research, and biomedical research is an area of particular strength for the university. More than 11,000 faculty and 1,600 graduate students conduct research at the medical school and its 15 affiliated hospitals and research institutes. In 2019, the medical school and its affiliates attracted $1.65 billion in competitive research grants from the National Institutes of Health, more than twice that of any other university.
=== Libraries ===
Harvard Library, the largest academic library in the world with 20.4 million holdings, is centered in Widener Library in Harvard Yard. It includes 25 individual Harvard libraries around the world with a combined staff of more than 800 librarians and personnel.
Houghton Library, the Arthur and Elizabeth Schlesinger Library on the History of Women in America, and the Harvard University Archives consist principally of rare and unique materials. The nation's oldest collection of maps, gazetteers, and atlases is stored …
