Classic L.I.S. Merchandise
Lost in Space Toys, Models, and other L.I.S. TV Items

Lost in Space
Pictures and Posters
 

Lost in Space DVDs, VHS Tapes, Audio CDs

Lost in Space DVDs
Lost in Space VHS

Lost in Space Forever (DVD documentary)

The Fantasy Worlds of Irwin Allen (DVD documentary)

TV Guide Looks at Science Fiction
hosted by William Shatner

Lost in Space Original Television Soundtrack (audio CDs):
Volume 1, Volume 2, Volume 3

Lost in Space Books:

The following Lost In Space books are out of print, but usually available used through Amazon.com:

Lost in Space Classic Postcard Book

Lost in Space : The Ultimate Unauthorized Trivia Challenge for the Classic TV Series

Lost in Space Model Kits
(hover mouse over image for more details)

Lost in Space Action Figures