Presidential autographs

Wilton, CT – Two letters signed by Albert Einstein (one typed, one handwritten, both in German), a recognizance bond signed by Sir Isaac Newton when he was Warden of the Royal Mint in 1699, an
New York—On Tuesday, April 17, Swann Galleries will conduct a sale of Revolutionary Americana from the Allyn Kellogg Ford Collection, followed by Autographs.