From the introduction:
A general collection of all kinds of stuff from my old campaign from the mid 1980s.
This scenario was published in two forms, but variations exist. The scenario provides a substantive amount of setting information and sometimes refers to itself as House of Hawk Campaign Setting. The titular House of the Hawk is a mercenary/adventuring company. The included scenario, Elkwood Manor, is suitable for 4th - 7th level characters.
The setting incorporates elements from numerous commercially published settings, including Al-Qadim, as well as incorporating variant rules derived from The Arduin Grimoire 1: The Arduin Grimoire.
This sprawling scenario is typically distributed as a ZIP archive containing four GIF files (maps) and about twenty ASCII files (unfortunately ALL IN CAPS) that are semi-arranged in topics.