The Quadlink Quadram is an Apple II+ on an ISA card that will run in IBM PC, XT, and equivalents.

Quadlink_Filer.dsk
The Central Point Filer utility which was the Apple II operating system disk for the Quadram Quadlink.

Quadlink_Filer_High-Quality.pdf
Manual for Central Point Filer.

Quadlink_Manual_Low-Quality.pdf
Manual for Quadlink Quadram card.

This set lacks the crucial system disk, but another person has promised to upload that disk soon.  With the system disk, Asimov will have the complete set of Quadlink materials.

For more information, you can contact billspamcan \\at\\ gmail \\dot\\ com.