Link: http://www.pacificbulbsociety.org/

I cannot say enough great things about this organization, considering the contribution it has made to the world since its inception at the turn of this millennium. This group of volunteers has put together an extensive WIKI presentation of flower bulb images and their culture. Additionally, they have an active listserv community where enthusiasts share loads of gardening knowledge.

Finally, you don't have to be a member to participate with and take advantage the expertise of the other bulb fanatics, but for a meager $20 a year, you can also participate in their regular flower bulb and seed offers made through the listserv.