Dr. Rothman's book The Barber In Modern Jewish Culture: A Genre of People, Places, and Things, With Illustrations is
already out of in print.
Here's Dr. Rothman on YouTube:
Back in 1988 I did a little bit of research on "barbers in literature" for Dr. Rothman. I really enjoyed his classes - his Eighteenth Century Lit starring Samuel Johnson, and his Nobel Prize Winners in Lit class starring (for me) Garcia Marquez.