These are old. probably dried. looks like a good candidate for moistening with some kind of light oil. I have done such things by bracing the ribbon in a clamp, then putting the ribbon between 2 sponges moistened with wd-40, then using a power drill to slowly spin the ribbon. If you over moisten it, then you got to do it again with a dry sponge. One can also do this with ink too.
bin location2GCFA2 and 2BAFB1