GUESTManofLetters above refers to the political song collection in Glasgow.

It's the Janey Buchan Political Song Collection (JBPSC).

(Note - Janey, not Jenny).

It is indeed now housed at the University of Glasgow, having originally been housed at Glasgow Caledonian University.

The JBPSC is probably best contactable through its Facebook page. Some of its materials have been digitised, but as is the way of things, lack of funding and so on means that progress is slow.