Report of the Commission on the Social Studies, American Historical Association.

The American Historical Association (AHA) is the oldest professional association of historians in the United States and the largest such organization in the world with 11,000 members as of 2025. Founded in 1884, AHA works to protect academic freedom, develop professional standards, and support scholarship and innovative teaching. It publishes The American Historical Review four times annually, which features scholarly history-related articles and book reviews. AHA is the major learned society for historians working in the United States, while the Organization of American Historians is a field society for historians who study and teach about the United States.