Like Doug's other game, this adventure seems to have been distributed at some point through his Adventureland BBS. It seems likely the C64 version was the original release. Later versions are credited to Doug's company name Program Dynamics and include references to his BBS.
There are at least two different DOS/PC versions. One is dated 1985. The later one ("version 2") seems to date from 1987. From the readme file, it seems like Doug was responsible for the PC port.
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