The Weathermen were founded in 1969 as a faction of the Students for a Democratic Society. Original members included: Karen Ashley, Bill Ayers, Bernardine Dohrn, John Jacobs, Jeff Jones, Gerry Long, Howie Machtinger, Jim Mellen, Terry Robbins, Mark Rudd, and Steve Tappis.
The Weathermen later came to be known as the Weather Underground and the Weather Underground Organization. They became very well-known due to their provocative literature and acts of violence. Through the late 1960s and mid-1970s the Weathermen took credit for two dozen bombings.  This included an accidental bombing in March 1970 that killed 3 Weathermen in their New York City apartment.
The item featured here focuses on Benjamin H. Brown, director of the Center for International Affairs of Harvard University. In the Fall of 1970 the Weathermen bombed the CFIA injuring Brown. Three members of the Weathermen; Eric Mann, Henry Olson and Phil Niles were tried and convicted on assault and battery and disturbing the peace charges.
The Hall Hoag collection contains roughly 50 items from the Weathermen.
 Collier, Peter and David Horowitz. Destructive Generation: Second Thoughts About The 60s. New York: Summit Books, 1989 p. 106
 Wiarda, Howard J. Harvard and the Weatherhead Center for International Affairs (WCFIA): Foreign Policy Research Center and Incubator of Presidential Advisors. Lexington Books, December 3, 2009 p. 39