Albert Einstein with Jakob Klatzkin and Abraham S. Yahuda at Einstein's summer home in Saranac Lake, New York.

Digital ImageAbraham S. Yahuda was a famous polymath, linguist, writer, teacher, and rare document collector. His research interests included Judeo-Arabic relations, religion, and antiquities. He taught in Berlin from 1905 to 1914, in Madrid from 1915 to 1922. He eventually immagrated to the US to teach at the New School for Social Research in New York.Jakob Klatzkin was a Jewish philosopher, publicist, author, and publisher.Digital Imag