This list of works is by no means exhaustive. It contains just those of which I know, and those which have been pointed out to me. Books in French are here.

Thank you to Gail for her help

Beethoven in German Politics, 1870 - 1989

The use made of Beethoven and his music in Germany
Author: David B. DENNIS
Yale University Press
251 pages - 1996
ISBN : 0-300-06399-7.

Beethoven and the French Revolution

Not the great book I expected on this subject
Author: Bishop Fan S. NOLI
International Universities Press
126 pages - 1947.

Author: Leo SCHRADE
Yale University Press
172 pages - 1942.

Author: Frida KNIGHT
Lawrence & Wishart
206 pages - 1973
ISBN : 0-85315-266-7.

Beethoven - Die Geschichte seiner Familie

Genealogic study
Author: Joseph SCHMIDT-GÖRG
Verlag Beethoven Haus Bonn
1964
272 pages.

Der Brief an die Unsterbliche Geliebte

Letter and comments (several languages)
Author : Ludwig van BEETHOVEN
Verlag Beethoven-Haus Bonn
2001 - 50 pages
ISBN: 3-88188-045-3.

The Beethoven Journal - Summer 2000 - Volume 15 - Number 1

In favour of Almerie Esterhazy
Author: Joroslav CELEDA
Pages 2 to 18
ISSN: 1087-8262.

Beethoven : a man of his word - Undisclosed Evidence for his immortal Beloved

In favour of Anna Marie Erdödy
Author: Gail S. ALTMAN
Anubian Press
1996
429 pages
ISBN: 1-888071-00-1.

Beethoven

In favour of Antonie Brentano
Author: Maynard SOLOMON
Publisher: Schirmer Books
554 pages - 2001 (2nd revised edition)
ISBN: 0825672686.

Beethoven's Beloved

Author : Dana STEICHEN
Doubleday & Company, Inc.
Garden City, New York
526 pages - 1959.

Archidule Rudolph, Beethoven's Patron, Pupil and friend

His Life and Music
Author: Susan KAGAN
Pendragon Press
1988 - 353 pages
ISBN: 0-945193-45-9.

The philatelic Beethoven

Monography
Author: Dr George HARDMAN
Edited by Author
February 1999
188 pages.

Max Klinger : Beethoven

The statue of Beethoven by Max Klinger
Author: Barbara JOHN
Seemann
October 2004 - 80 pages and about 60 pictures
ISBN: 3865020909.

Klimt: Beethoven, the Freize for the Ninth symphony

Historic presentation of the Beethoven freize by Klimpt
Author: Jean-paul BOUILLON
Editions Skira Flammarion
1986 - 110 pages
ISBN: 2-605-00078-8.

Beethoven glorified in Statues

Presentation of statues of Beethoven
Author: Fariba Joubine ALAI
Homa Publishers Limited
2000 - 80 pages
ISBN: 0-9538109-0-9.

Das Drama Beethoven erlebt von Bourdelle

More than 75 pictures of Beethoven, following Bourdelle
Presentation by Michel DUFET
Arted, Éditions d'Art, Paris
After 1957
96 pages.

Erinnerungen an Beethoven: Skizzen, Zeichnungen, Karikaturen

Sketches, drawings and cariacatures of Beethoven
Text : Silke BETTERMANN
Beethoven-Haus Bonn
32 pages - 1987.

Beethoven's Hair

Historic and Scientific exploration into a lock of Beethoven's hair.
Author: Russell MARTIN
Blomsbury Publishing
2000 - 176 pages
ISBN : 0-7475-5340-8.

Fatal links - The curious death of Beethoven and the two Napoleons

An inquest into Beethoven's death and it's possibly similarity to the poisoning of Napoleon
Author : Gail S. ALTMAN
Anubian Press
1999 - 228 pages
ISBN: 1-888071-02-8.

Music & Medecine - Haydn, Mozart, Beethoven, Schubert : Notes on their lives, works and medical history

111 pages about Ludwig van Beethoven
Author: Anton NEUMAYR
Medi-Ed Press
1994 - 447 pages
ISBN: 0-936741-05-8.

Die Krankheiten L. v. Beethovens

Authors: Hans BANKL - Hans JESSERER
Verlag Wilhelm Maudrich
1987 - 147 pages
ISBN: 3-85175-453-0

Drei Begräbnisse und ein Todesfall

Authors: Beethoven-Haus Bonn und Museum für Sepulkralkultur, Kassel
Verlag Beethoven-Haus Bonn
2002 - 252 pages
ISBN: 3-88188-073-9.

The changing Image of Beethoven

Author: Alessandra Comini
Rizzoli International Publications
1987
480 pages
ISBN: 0-8478-0617-0.

Ludwig van Beethoven

Remarkably illustrated dossier
Author: Gustav L. de BARANYAI
Herausgegeben von der Beethoven Gesellschaft
München - 1970
216 pages.

Beethoven und die Nachwelt

Beethoven and his destiny
Authors : collective
Beethoven-Haus Bonn
1986
250 pages.

Beethoven-Häuser

The places where Beethoven lived in
Authors: collective
Verlag Beethoven-Haus Bonn
2001 - 96 pages
ISBN: 3-88188-066-6.

Drei Begräbnisse und ein Todesfall

Beautiful Book about Beethoven's last days and after
Authors: Beethoven-Haus Bonn and Museum für Sepulkralkultur in Kassel
Verlag Beethoven-Haus Bonn
2002 - 252 pages
ISBN: 3-88188-073-9.

Beethoven and England

An account of sources in the British Museum
The Trustees of the British Museum
1970
76 pages.

Beethoven

Guide to the museum at Vienna - Pasqualati House
Composer's Memorial Room (Pasqualati House)
Historical Museum of the City of Vienna
70 pages.

Beethoven in Heiligenstadt

To know everything about Beethoven at Heiligenstadt
Herausgegeben von der Wiener Beethoven-Gesellschaft
1970
18 pages.

Verein Beethoven-Haus Bonn 1889-1964

Presentation on and documents about the association
Beethoven-Haus Bonn
1964 - 64 pages.

Beethoven: the Ninth Symphony

Multimedia discovery of the 9th symphony
Author: Robert WINTER
Editeur: Microsoft
Collection: Microsoft Multimedia
1992
1 cd rom