Many of the State Historical Society’s holdings are included in Merlin, the shared library catalog of the four University of Missouri campuses. The State Historical Society holds books – both modern and historical – on social science and humanities education in Missouri, public history and historical institutions, and other aspects of the study of social sciences and humanities. Some materials can be found by searching the subject term "social sciences". In most cases, it is most effective to search on the specific field of study you are researching such as psychology, sociology, anthropology, english, history, and more.
The vertical files contain magazine and newspaper clippings, handwritten information donated by patrons, bibliographies, programs, brochures, flyers, and other materials that, by reason of their physical formats, cannot be placed on the shelves with books. SHSMO's Columbia Research Center has vertical files for several University of Missouri departments in specific fields in the social sciences and humanities, as well as information on individuals and organizations associated with fields in the social sciences and humanities.
Social sciences and the humanities have many branches. The State Historical Society of Missouri's Historic Missourians website has entire categories dedicated to leaders and activists, politicians, and scientists featuring 50 biographies complete with rich images, artifacts, and primary sources.