You may find other websites offering Windows 3.1 ISO images for download. However, be cautious when using these sources, as they might be:
Most users want a single ISO file they can burn to a CD or write to a USB drive, plug into an old Pentium or a virtual machine, and have Windows 3.1 greet them immediately. windows 3.1 bootable iso download
Have a legitimate copy of the disks? Consider archiving them to The Internet Archive to keep history alive safely. You may find other websites offering Windows 3