ESD (thing)

An ESD is also an Electronic Software Download. An odd way for Wizards of the Coast to package up a PDF file of a scanned in, older Dungeons and Dragons book. They have lots of the old First Edition goodies there as well as a good number of Second Edition. Their first priority seems to do the Forgotten Realms but they have some Greyhawk, Dark Sun, Mystara, Planescape, Ravenloft, etc.

For more info, visit:

http://www.bastionpress.com/esd.htm