http://specials.bmw-motorrad.com/com/en/index_frameset.html
Select History, and then Historic BMW Models.
http://www.bmwclubs.org/
The global organization for the worldwide associated BMW Clubs.
http://www.historischesarchiv.bmw.de/2/index.php
A little tricky to search but there's some cool stuff. Try selecting Search and Advanced Search. Then select Product, Description, Contains, and then Year of Production.
http://www.bmwmotorcycles.com/
The official company web site for BMW motorcycles.
http://www.motorrad.bmw.de/
