4 items:
 (BIN) IFTheoryBook.pdf
       [16-Mar-2011]
       The IF Theory Reader, edited by Kevin Jackson-Mead and
       J. Robinson Wheeler.
       
 (BIN) IFTheoryBook.prc
       [12-Dec-2015]
       Revised Kindle ebook edition of the IF Theory Reader.
       Contains all of the original content, plus an updated
       chapter by Graham Nelson, and an introduction 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.
       
 (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/