Vernon B. Hester, author of MultiDOS and other wonderful programs, has made his software and manuals available:
Astrocal Manual (5th Edition) – DOC Format
Astrocal Manual (5th Edition) – PDF Format
MultiDOS Manual – DOC Format
MultiDOS Manual – PDF Format
Zeus (9th Edition) – DOC Format
Zeus (9th Edition) – PDF Format
When my host fixes my SQL upload, and I can get into the TRS-80 Archive Lookup, I will post the corresponding software packages here for download.
Also as previously noted, Vernon has a blown Model 4 power supply, which is preventing him from providing updated software. Any help is appreciated.