These are the docs for The Halley Project: A Mission In Our Solar System, developed by Tom Snyder Productions and published by Mindscape in 1985. The PDF consists of scans of the game box, Mission Briefing Cassette, diskette, Flight Instructions Reference Card, Mission Technical Reference Guide, Registration for Certification, and a small version of the System Star Map.
You can also download separately an MP3 of the audio from the Mission Briefing Cassette and a large (8 MB) PNG of the System Star Map below.
Docs PDF (38.1 MB)
Mission Briefing Audio MP3 (4.9)