Harvard University President of Harvard University. There are 16,000 staff and faculty, including 2,400 professors, lecturers, and instructors teaching 7,200 undergraduates and 14,000 graduate students. The Faculty of Arts and Sciences has primary responsibility for instruction in Harvard College, Graduate School of Arts and Sciences, and the Harvard Division of Continuing Education, which includes Harvard Summer School and Harvard Extension School. There are ten other graduate and professional school faculties, in addition to the Radcliffe Institute for Advanced Study. Joint programs with the Massachusetts Institute of Technology include the Harvard-MIT Division of Health Sciences and Technology, the Broad Institute, The Observatory of
Harvard University nearly 80 individual libraries holding over 18 million volumes. According to the American Library Association, this makes it the largest academic library in the United States, and one of the largest in the world. 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. America's oldest collection of maps, gazetteers, and atlases both old and new is stored in Pusey Library and open to the public. The largest collection of East-Asian language material outside of East Asia is held in the Harvard-Yenching Library.