I don't have that one, but this one is one from the same era (1970-74) and was a favorite as well. In fact I may have liked this one better than USA Union. But I wore them both out.
Hard to read in the image, but it is: Empty Rooms
I was a Mayall fan since the early seventies. He was aware then and is still aware.
https://www.youtube.com/watch?v=BAST3BLgjYE