This collection consists mostly of digitized scores and other materials of the Gerry Mulligan Library. In 2003 the Mulligan Publishing Co., Inc. granted permission to the International Jazz Collections, Lionel Hampton Center of the University of Idaho, to scan a portion of the Gerry Mulligan Library. As part of the agreement between the Mulligan Publishing Co., Inc. and the University of Idaho, a copy of the digitized materials was given to the Library of Congress, the repository of the collection, which it obtained in the late 1990s.

Visit also the finding aid and the digital Gerry Mulligan Collection at the Library of Congress.