I recently started collecting collegiate a cappella LPs. I bought a bunch of old Cayuga's Waiters albums on eBay (I was a Waiter at Cornell), plus "Brothers in Song," the original Tufts Beelzebubs recording.
A few months ago I came across an LP called "Campus Hootenanny." The backstory: In 1964, five Ivy League collegiate a cappella groups—the Kroks, the Nassoons, Cayuga's Waiters, the Duke's Men, and the Jabberwocks—performed a group show at Brown University. RCA-Victor recorded the show and released it as a live LP. None of the old Waiters remember the show. I reached out to the Kroks, too, and despite their extensive alumni network (a note to younger groups, this is how it's done), as of yet no one has been able to recall the details. I'll keep researching.
In the meantime: The album is a pretty badass piece of collegiate a cappella history. Luckily for you, there's another copy floating around on eBay—all the way from the UK. Check it out here.