|語言註釋：||These materials are in English, with some in German. English.|
|描述：||3.0 Linear feet|
This archive, and its accompanying library, were acquired by Guy Logsdon, then Library Director, in 1977. It is ascribed to Harold Leventhal, who was a folk music manager, handling such musicians as the Weavers, Woody Guthrie, Peter, Paul and Mary and Joan Baez. This archive includes an selection of correspondence of the noted activist Ammon Hennacy as well as biographical materials. Other materials appaer to have been added later from other acquisitions. These will be noted as they are identified.