This collection consists of the pre-1934 institutional archive of the William Andrews Clark Memorial Library and the records of its founder, William Andrews Clark, Jr. Items include correspondence, invoices, photographs, secondary source materials and other documents related to Clark, his library, and his family, friends and colleagues.

Contains photographs and other materials related to William Andrews Clark, Jr.'s colleagues and friends, including Clark Library staff members, musicians, booksellers and other public figures. In particular, this subseries contains significant original materials related to Cora Sanders as well as print materials about artist Allyn Cox. A number of signed photographs of musicians and literary figures are also included here.