If you still have any of those XCMDs lying around, it'd be great if you could upload them[1] to the HyperCard stacks collection[2] - particularly if you still have source code. (Of course, only if not covered under NDAs, etc...).

If they're still on old media (floppy disks, SCSI hard drives, etc...) contact me[3] and I'll do by best to help get them transferred.

[1] http://hypercardonline.tk/

[2] https://archive.org/details/hypercardstacks

[3] HyperCardOnline@gmail.com