Our friends at the Harry Ransom Center just announced the opening of the David Mamet papers for scholarly research.
The archive covers his entire career, so it includes the source materials for all of his major plays (Glengarry Glen Ross, American Buffalo, Oleanna), as well as his screenwriting work (The Postman Always Rings Twice – the 1981 adaptation, The Untouchables, The Spanish Prisoner).
Find out more at Cultural Compass.