Harry Lewiston was an American showman, freak show director, and barker. He wrote his memoirs under his stage name, published posthumously in 1968 as 'Freak Show Man: the Autobiography of Harry Lewiston, as told to Jerry Holtman'. Wikipedia*
On the C-SPAN Networks:
Harry Jaffe has one video in the C-SPAN Video Library; the first appearance was a 1994 Booknotes.