- Infocom Documentation Project - PDF file of scanned orginal game manual.
- Infocom Homepage: The Witness - Description, box art, release information, statistics, and packaging details.
- Review by Matthew Murray - "The Witness is not as thrilling to play as Infocom's other mysteries, or most of their other games, but it is still interesting and worth the time of any mystery buff."
- SPAG Reviews: The Witness - Three reviews by Brian Reilly, Stephen Grenade, and "Bozzie".
- The Infocom Gallery: The Witness - High-quality scans of the gray box packaging, manual, matchbook, suicide note, and telegram.
Media publications
- New Zork Times: How The Witness Came to Be - Article by Stu Galley about the game's creation. (Published 1984.07.00)
- New Zork Times: Witness - Text of game announcement from Infocom's newsletter. (Published 1983.07.00)