I think the Apple has offered the System 7.5.3 free of charge. I have the CD image, through them, I send this one. This System CD includes:

- System 7.5 Version 7.5.3 (Yes, all of them are same software as download)
- QuickDraw GX 1.1.3 (Same as download version)
- PowerTalk 1.2.3 (This is so stable, but not tested)
- OpenDoc 1.0.4 (You should try 1.2, this one is stable)

And also I have my full set of disk images. It contains 19 disk images, 16 of install images, 2 disk tools images, and 1 install read images. Through them, missing 7.5.3 User Manual.

Do you have the latest copy of System 7.5.3 Upgrade Manual? I found in Apple but don't help them related (like no bookmarks, no instructions, and less fluent).

I have the torrent, the related here:

http://www.mediafire.com/?4uu0yhztmgo

The torrent has System 7.5.3 CD and disk images (not all, only System 7.5.3 images only).