The materials in this collection range from 1774 to 1954. The bulk of the collection includes musical score books, as well as, loose scores, microfilms and LP vinyl records. The musical score books contain conductor renditions of scores originally written by famous musicians such as Mozart, Bach, Beethoven, and Stravinsky, and more contemporary 19th – 20th century composers. Smaller series include LP vinyl recordings of music from when Klemperer conducted for the Los Angeles Philharmonic Orchestra and EMI in London, and microfilm and photocopies of scores whose originals have since been returned to family.

Series I: Musical Scores Inclusive Dates: 1774-1955 Arrangement: Alphabetical

This large series consists of the majority of the collection. Much of the collection is conductor versions of musical pieces as well as scores for individual instruments. Many of the pieces are autographed by Klemperer or by the composers who wrote or arranged the piece and gifting it Klemperer.

Series II: Oversized Musical Scores Inclusive Dates: 1774-1944 Arrangement: Alphabetical

This smaller series consists of oversized musical scores that is contained in Series I. This series also includes oversized publications and sheet music.

Series III: Other Materials Inclusive Dates: 1958-1959 Arrangement: Alphabetical

This small series consists of two microfilms: Hindemith’s Aber die Wissenschaft, Leo Weiner’s Ung. Volkstanze, and Klemperer’s own Geistliches Kampflied master negative. Also included is a two LP record set of Klemperer’s rendition of Beethoven’s Symphony No. 9 in D Minor, and two singles of Beethoven’s Violin Concerto and Symphony numbers 1 and 8.