This site, maintained by the Deutsches Historisches Museum in Berlin, provides information about the White Rose and has excerpts from all six of its leaflets.
The Bundeszentrale für Politische Bildung presents a site devoted to the members and the story of the White Rose. Information on the Nazi regime and its criminal justice system provide added context for the group's trial and execution.
This site offers both general information on student and youth opposition to National Socialism, as well as pages on all of the groups that opposed the Nazis, including the White Rose.