4 items:
 (BIN) IFTheoryBook.pdf
       [16-Mar-2011]
       The IF Theory Reader, edited by Kevin Jackson-Mead and
       J. Robinson Wheeler.
       Version 1, March 2011.
       
 (BIN) IFTheoryBook.prc
       [12-Dec-2015]
       Revised Kindle ebook edition of the IF Theory Reader.
       Contains all of the original content (from version 2,
       April 2011), plus Graham Nelson's "The Craft of Adventure"
       as an appendix, and a foreword by David Cornelson.
       Edited by Kevin Jackson-Mead and J. Robinson Wheeler, 
       Kindle edition by J. Robinson Wheeler.
       
 (BIN) astrobok.zip
       [21-Jan-1996]
       Astronomy Without a Telescope, an interactive story book
       by George Jenner. DOS executable.
       Edition 1.2, September 1995.
       
 (BIN) zx81adv.zip
       [17-Jul-2000]
       A chapter from "The ZX81 Pocket Book" by Trevor Toms
       (printed in 1981), describing an archaic text adventure
       authoring system, somewhat reminiscent of the one used by
       Scott Adams. "Authentic looking" HTML with GIFs. Scanned
       and converted by Vasyl Tsvirkunov.
       
       
       The IF Archive is a public service of the
       Interactive Fiction Technology Foundation.
 (HTM) http://iftechfoundation.org/
       
       This mirror is a public service of 661.org.
 (HTM) http://661.org/