Genii, the conjurer's magazine is the longest-running independent magazine devoted to magic and magicians in the history of the art. Their website has a bit of information for the public including some lively forums, but the real treasure trove is MagicPedia. There, you can find over three thousand biographies, information on almost 1,700 books of and about magic, nearly 200 magic organizations, and so much more. The current featured article is on the American Civil War, and the role numerous magicians played at that time.
Ricky Jay's legendary book, "Cards As Weapons," is out of print. Used copies are expensive. Luckily, you can read it here. (The book contains some NSFW content.) I've you're new to Ricky Jay, start here.
Imps imparting the secrets of magic : a visual history of a recurring motif through 19th Century magicians' posters. via Airbag : Longboard
Roy Horn, of Siegfried and Roy fame, was mauled by a white tiger last night during his show.
David Blaine is at it again (requires flash). If you are in New York, you can also see him frozen live at Times Square from now through the 29th.