# IFTheoryBook.pdf
ifwiki: IF Theory Reader

The IF Theory Reader, edited by Kevin Jackson-Mead and
J. Robinson Wheeler.

# IFTheoryBook.prc
ifwiki: IF Theory Reader

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.

# astrobok.zip

Astronomy Without a Telescope, an interactive story book
by George Jenner. DOS executable.

# zx81adv.zip

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.