All of the historic OS/2 sources have been posted. The code was developed on OS/2 v1.1.
The final version (1.0.1) to read the length of a resource fork has been poasted.
http://cvs.sourceforge.net/viewcvs.py/bergertom/Java_Apps/cddb_ReadDir_OSX_JNI/
The compiled dylib tested with OSX 10.4.2 was posted in the files section:
https://sourceforge.net/project/showfiles.php?group_id=79642
All of the historic DOS networking code (interrupt 0x5C) has been posted. As you may know, INT 5C was last supported in Windows NT4 and was removed from Win2000 (i.e. the code stopped working).
All of the historic Clipper (dBase) source code has been posted. It includes source code for libraries written in Clipper, C and x86 Assembly.