Maintainer of the HyperCard stacks collection on the Internet Archive (https://archive.org/details/hypercardstacks), here.

If you're able to make a disk image, you can use the uploader site at http://hypercardonline.tk/ to upload stacks to the archive. If you need help reading the disks in the first place, contact me (hypercardonline@gmail.com) and I can see if I can help.