Hi Nathan,
It would be very welcome if you could image those disks and upload them for us, please.
I know that aragon has promised to look for his 3.6a archive over the weekend, but the more contributions we have, the better.
The 3.6a TOSEC disk 3 image was evidently produced without any regard to error checking, and this makes it preferable that we check the others in the set as well.
The program I use on Workbench to image Amiga floppy disks is
TSGui v2.5b14 from EAB member Thomas Rapp's Downloads Page!
Thanks for your offer of help with this.