Sorry for not updating this in a while. I just acquired a used HP 1660 logic analyzer with original manuals, disks, etc… I don’t know how rare these disks are, so I’m uploading them here. There were 7 in total, and I saved them with IMD. That means you should be able to copy them over to a regular floppy and have an identical copy. You will need IMD and DOS to write copies.

There were 6 HD and 1 DD. One disk was not able to be read on track 0, head 0.

1. Unlabeled (bad track 0)
2. Logic Analyzer Save Config (Handwritten)
3. Performance Verification Software (HP1660/61/62/63C/CS)
4. Logic Analyzer Symbol Utility (HP1660C/CS and 1670A)
5. Operating System Software 1 (HP1660/61/62/63C/CS)
6. Operating System Software 2 (HP1660/61/62/63C/CS)
7. Operating System Software (HP1650B/1651B)

You can find all of them here