Albert Einstein with Ethel Yahuda (far left, back to camera), Abraham Yahuda and Jakob Klatzkin in Saranac Lake, New York.

Digital ImageDigital 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