Help unzipping old zip files

[popeyespappy]

The first 6 disks were the architectural drawings for a national park service building in Atlanta. There are 48 other floppies which appear to more drawings of the rest of the park. Their facilities people are going to be happy to see these if they can open them. I have AutoCAD 2014 on this laptop. I just looked and the oldest format I can save as is AutoCAD 12. The date on the floppy drawings would put them at version 11 or sooner so I don't know if that will work or not.