The mystery guest is Salvador Dali! I have no idea what's going on at the beginning of this clip, but it's fascinating. And Dali is hilarious, he answers yes to almost every question.
I'd never heard of Betty Rowland but the title of her NY Times obit caught my eye: "Betty Rowland, One of Burlesque's Last Queens, Dies at 106." One oh SIX! That's impressive. Her handle was "Red Head