Xerox copies of Lost in Space episode scripts are readily available. Scripts can 
              also be obtained for the unaired pilot "No Place to Hide" and the unfilmed
              4th season episode "Malice in Wonderspace." Early drafts and revised 
              scripts are also known to exist. The cost of one of these is usually somewhere
              between $10 - $15 per episode. 
              
              From a collector's point of view, the most prized scripts are original 
              scripts. With the exception of the covers, all original Lost in Space 20th Century
              Fox scripts were hand-typed. Copies of the orginal typed scripts were then
              xeroxed for cast and production staff. So how do you tell an original
              script from a recent xeroxed copy? There is no easy answer, but the
              following may help.
              
              All 20th Century Fox scripts for Irwin Allen shows basically followed the
              same format. Script covers would be made from thin two-ply colored cardboard.
              Two holes would be punched on the left hand edge with the pages
              held together by two bendable hole pins. This would make it easy to change
              script pages even at the last minute by simply substituting modified
              pages with new ones. If you have a script and it doesn't have these holes then you
              probably don't have an original. Note, in "Revised Shooting Final" scripts, 
              the presence of modified pages was indicated by different colored pages.
              
              Script covers included the title of the episode in the form of a logo, the 
              name of the series: Lost in Space, a date at the bottom right hand side, a
              script status ("Shooting Final" or "Revised Shooting Final") at the top
              right hand side and Irwin Allen production details at the center bottom.
              
              The first page of the script would normally be the title page. This page 
              was hand typed and included all the information found on the covers with
              the addition of the script writer's name and a script reference number
              at the bottom right hand side. The reference number would then be
              repeated on every page of the script. In "Revised Shooting Final" scripts,
              a page usually at the beginning of a set of modified pages would alert
              20th Century secretaries to special instructions regarding the insertion
              and removal of pages.
              
              When buying a script it's worth remembering that not just the main Lost in 
              Space cast had them. Numerous production staff, guest cast and cast doubles
              had them as well. So while original scripts can be considered rare, they are
              not as rare as you might think. Naturally, the most prized scripts would be
              those that are signed by the main cast or early annotated versions belonging
              to a script writer. Regrettably the latter rarely come on the market and
              your best bet to find one would be entertainment related auctions held by 
              larger auction houses such as Butterfield & Butterfield, Southeby's and
              Christies.
              
              The script shown on this page is the final revised shooting script of the 
              2nd Season episode "The Android Machine" and is one of several scripts 
              originally belonging to Bob May (the man inside the robot) but now in
              private hands.
              
              Bob's handwritten annotations and markings can clearly be seen.  It was
              normal practice for Bob to mark up the robot dialogue in round brackets
              and also to note last minute script additions, amendments and deletions.
              The pages with Robot dialogue frequently had their corners folded down.
              Bob also tended to underline each syllable of long or difficult to
              pronounce words.
              
              Another common feature is a vertical fold across the middle suggesting
              that Bob actually had the scripts at hand while inside the Robot
              costume. The fact that the stiff cardboard covers of his scripts generally
              don't have the same folds seems to confirm this view. Bob probably
              removed the covers as they were most likely cumbersome inside the
              costume.