Harvard’s libraries have a new organizational structure meant to foster collaboration between buildings and units. Under the new vision, Harvard’s 90-some libraries will be separated into 5 affinity groups based on service and focus. The groups are fairly amorphous to allow for differences in mission, explanations from Harvard Magazine:
"libraries focused on application of theory in practice, including those of the schools of law, business, education, and government; a group focused on physical and life sciences with shared research responsibilities, including the medical school library and the science libraries; a group formed around content areas, such as the humanities and the social sciences, including major collections such as those of Widener and Lamont;
libraries of arts and culture such as fine arts, architecture, music, theater, and film; and finally, a group of special collections libraries such as Houghton and the University Archives."