To whoever gets the Walker, I would like to offer my services to assist in reconstruction of the software.
I'm Jason McMullan, one of the AROS m68k developers, and am keenly interested in the ROM and DH0: dumps.
I should be able to help reconstruct the RDB, and generate a bootable image that could be put on a CF device (to replace the aging hard drive).
The ROM dump itself would be especially interesting to Toni Wilen (who is also a key figure in AROS m68k development) as it would allow him to determine what (if anything) needs to be added to WinUAE to emulate the Walker.