Official Sites of Pern

The Worlds of Anne McCaffrey
Anne's new website, designed by her son Alec, went online in July 2000.
A redesign of the site is due soonish...

Todd McCaffrey
Anne's son, formerly known as (and published under) Todd Johnson.  He is writing new Pern novels with and without Anne.

The World of Pern
DelRey, the main publisher of Anne's books has a great site with the latest book details, book excerpts, winners of an art contest, a way to email Anne, and more.  This site has not been updated since April 2000.
You can also visit DelRey's Main Site