http://www.moshiach.com/features/tribes/
“This feature is based on “Nihon-Yudaya, Huuin no Kodaishi” by Rabbi Marvin Tokayer, translated from Japanese by Arimasa Kubo.
“Following his ordination, Rabbi Tokayer served as a U.S. Air Force Chaplain in Japan, and upon his discharge from the military, returned to Tokyo to serve for many years as rabbi of the Jewish Community of Japan as well as Vice President and Director of Culture, Religion and Education for the Jewish communities of the Far East.”
The link has a collection of in-depth essays about purported ‘lost tribes’ scattered from China to Ecuador.
interesting