The files contain pre-publication and published music materials, including annotated manuscript and holograph scores, edited score paste-ups, and negative and positive proof copies. Most of the materials are related to the production of Henry Cowell's quarterly publication New music and span the entire period that it was published. In addition to a comprehensive collection of printed editions of New music, the files include financial receipts and notes/corrections relating to publication. The music materials contain works by many leading 20th century composers, such as John Cage, Charles Ives, Carl Ruggles, Mario Castelnuovo-Tedesco, Ernst Toch, Edgar Varèse, and Arnold Schoenberg. Latin American composers, such as Carlos Chávez, and various European and Soviet composers are represented as well. In addition, the files contain correspondence with composers and publishing associates, including a significant amount from members of New music's editorial board, such as Elliott Carter, Henry Cowell, Wallingford Riegger, Nicolas Slonimsky, Vladimir Ussachevsky, and Frank Wigglesworth. The files also include music and various editions from other publishers with whom Langinger worked, namely his own Golden West Music Press in Hollywood, Calif., Delkas Music Publishing Company, and Affiliated Musicians, Inc.