Hi Jos,
for the Sage II/IV, I have the original master sets of IV.13, BIOS Source Code, Word7, Timberline, CPM, and boot disk from earlier IV releases, etc
for the Stride 400 series, I have original master complete sets of IV.21 and IV.22, Word7, Spell7, Timberline, and a few other things.
and I have a lot of internal stuff from Sage and Stride machines, everything from budgets to press releases to catalog pages and lots of info on power supplies, etc. 90% of that stuff ill never share.
with all that said I mirrored the directory listed above and am currently going through everything, I have a spreadsheet of all my disks that I've archived
documentation wise, I have the 4Mb mod for the Sage II/IV that was done by Chuck at ASCII Electronics in the Reno area along with schematic mods and some other TSB-related docs.
hardware wise I got 2 x Stride 460's (one has a blown power supply I'm currently looking for a replacement for), some pal chips for the I/O boards, a Video board for the Stride 400 series, and a few hard drives I need to go through before they lose their bits also have a pair of Sage II/IV's and a bunch of different fronts and rear panels (different than the world has seen) and have a boxful of 80 track floppy drives.