Zork Zero - The Revenge of Megaboz

Adventure Collective Review - http://www.adventurecollective.com/reviews/zorkzero.htm
Rated 4.5/5. "An entertaining and fulfilling beginning (and end) to the Zork series, Zork Zero represents some of the best of what Infocom had to offer during its glory days." By Matthew Murray

Infocom Documentation Project - http://infodoc.plover.net/manuals/temp/zork0.pdf
PDF file of scanned original game manual.

Infocom Homepage: Zork Zero - http://www.csd.uwo.ca/Infocom/zork0.html
Description, release information, statistics, packaging details.

Status Line: Zork Zero Takes You Back to the Beginning - http://www.csd.uwo.ca/Infocom/Articles/NZT/zorkzero.html
Text of game announcement from Infocom's newsletter.

The Infocom Gallery: Zork Zero - http://infocom.elsewhere.org/gallery/zork0/zork0.html
High-quality scans of box, parchment, and calendar.