That's a pretty awesome find, in my opinion.  My suggestion would be to scan it and get the original copy into your school's archives - they know how to take care of things like that so they don't disintegrate over time.

The scanned copy belongs up somewhere online where it can be seen.

What school are you going to?  I don't have any record of a "Sigma Kappa Cast", and Barry Bostwick seems to have gone to a school in San Diego that doesn't appear to exist any more...