The sheet music for "We're Saving Ourselves for Yale" is available in "Songs of Yale" edited by Marshall Bartholomew
http://www.singers.com/groups/Marshall-Bartholomew/ [which I don't have a copy of myself].

A complete (and easily understood version) can also be found at http://www.thetwentiethcenturyproject.com/Links.htm [and then click the bottom button].

--Charlie Baum