The former archivist in the Bielefeld City archives Monika Minninger has published a volume with more than 100 original sources and many illustrations on the history of Bielefeld Jews in the 19th and 20th century under the title
Aus einer Hochburg des Reformjudentums: Quellensammlung zum Bielefelder Judentum des 19. und 20. Jahrhunderts. By Monika Minninger: Bielefeld: Verlag fuer Regionalgeschichte, 2006 (Sonderveroeffentlichung des Historischen Vereins für die Grafschaft Ravensburg, 11). 241 pages with an index of names and places. ISBN 3-89534-611-X. 19 Euro.
It also contains a list of 39 male Jews who lived in Bielefeld in 1812 and many biographies of local families.
Since I own the book since yesterday I can answer questions on the content.
With kind regards
Fritz Neubauer, Bielefeld <fritz.neubauer@uni-bielefeld.de>