• 53 Music Library (Mills)

• 69 Music Scores
• 6 Books
• 1 Journals, Magazines, Newspapers

• 12 String quartets
• 11 Piano music
• 9 Sonatas (Piano)
• 7 Piano trios
• 5 Beethoven, Ludwig van, 1770-1827
• 5 Suites (Piano)
• 4 Piano with orchestra
• 3 Analysis, appreciation
• 3 Cantatas, Secular
• 3 Piano quartets
• 3 Variations (Piano)
• 2 Canons, fugues, etc. (Piano)
• 2 Clarinet and piano music
• 2 Concertos (Piano)
• 2 Marches
• 2 Masses
• 2 Music
• 2 Quartets, violins (2), viola, cello
• 2 Trios (Piano, clarinet, viola)
• 2 Trios (Piano, violin, viola)
• 2 Violin with orchestra
• 1 Appreciation
• 1 Bassoon and clarinet music
• 1 Beethoven-Haus (Bonn, Germany)
• 1 Brass quartets (Trombones (4))

• 76 Herttrich, Ernst, 1942-
• 24 Theopold, Hans-Martin
• 19 Beethoven, Ludwig van, 1770-1827
• 13 Schumann, Robert, 1810-1856
• 10 Mendelssohn-Bartholdy, Felix, 1809-1847
• 10 Mozart, Wolfgang Amadeus, 1756-1791
• 7 Groethuysen, Andreas
• 6 Liszt, Franz, 1811-1886
• 6 Schilde, Klaus
• 5 Brahms, Johannes, 1833-1897
• 5 Mies, Paul, 1889-1976
• 3 Beethoven-Archiv (Bonn, Germany)
• 3 Brandenburg, Sieghard
• 3 Chopin, Frédéric, 1810-1849
• 3 Elvers, Rudolf, 1924-2011
• 3 Lampe, Walther
• 3 Raab, Armin
• 3 Schmidt-Görg, Joseph, 1897-1981
• 3 Umbreit, Johannes
• 2 Andsnes, Leif Ove, 1970-
• 2 Appel, Bernhard R.
• 2 Averdonk, Severin Anton, 1768-1817
• 2 Beethoven-Haus (Bonn, Germany)
• 2 Gertsch, Norbert
• 2 Grieg, Edvard, 1843-1907

• 45 No linguistic content
• 16 German
• 13 Unknown
• 3 English
• 2 Latin
• 1 Italian

• 1 Norway

• 27 Scores
• 13 Scores and parts
• 6 Chamber music
• 6 Parts
• 6 Parts (Music)
• 4 2-piano scores
• 2 Instrumental settings
• 1 Art music
• 1 Ballades (Instrumental music)
• 1 Bibliography
• 1 Concert etudes
• 1 Excerpts
• 1 Fantasias (Music)
• 1 Fugues
• 1 Instructive editions
• 1 Marches (Music)
• 1 Periodicals
• 1 Solo with piano
• 1 Sonatas
• 1 Songs and music
• 1 Suites
• 1 Variations (Music)

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