Organization of American Historians | 11,265 followers on LinkedIn. World's largest professional group dedicated to US history with more than 7,800 members in US and abroad. | Founded in 1907, the Organization of American Historians (OAH) is the world’s largest professional association dedicated to American history scholarship. With more than 7,800 members from the U.S. and abroad, OAH promotes excellence in the scholarship, teaching, and presentation of American history, encouraging wide discussion of historical questions and equitable treatment of history practitioners. OAH publishes the quarterly Journal of American History, the leading scholarly publication and journal of record in the field of American history for more than nine decades.