Bremen

History
Bremen is the capital of the state of Bremen in northwest Germany, on the Weser River. The state of Bremen was formed in 1947 by combining Bremen and Bremerhaven. The cities of Bremen and Bremerhaven, with their cultural heritage and close location to the North Sea, have a high standard of living and leisure. Known as the Free Hanse City of Bremen, Germany’s oldest port city has been moulded by more than 1,000 years of history.
http://insurance.essentialtravel.co.uk/tg-europe/germany/bremen-history.asp

E-Mail Lists
http://list.genealogy.net/mailman/listinfo/famnord  (A mailing list for northern Germany including Bremen) 
http://www.rootsweb.com/~jfuller/gen_mail_country-ger.html#PRUSSIA-ROOTS  (Prussia Roots – includes Bremen)

Maps http://www.deutsche-schutzgebiete.de/webpages/Karte_Bremen_1914+.jpg (pre-WWI map)

Archives and Records
Bremen Links with searchable databases and Bremen passenger lists:
http://www.genealogylinks.net/europe/germany/bremen.htm
The website for Die Maus – The Society for Family Research in Bremen http://www.genealogienetz.de/vereine/maus/index_e.htm

Books
The GGS collection of Germanic Genealogy Books at Concordia University in St. Paul, MN has 9 books specifically on Bremen genealogy, all are in English.

Flags
http://www.crwflags.com/fotw/flags/de-hb.html
 

Bremen Flag
Free Hanseatic City of Bremen