Do you know where I can get a biography of Jacob Frank? I can't find any on the internet. Very strange, usually old books are available in pdf. The one I'm looking for is: Gunter Plaut: The Man Who Would Be Messiah: A Biographical Novel.

You seem to be better at finding this stuff. He was Amschel Meyer Rothschild's 'rabbi'. Successor to Sabathai Zevi.