This rare picture is a Who's Who of early American Zionists gathered in Tannersville NY in 1906 at the first convention of the Federation of American Zionists. Source: The New Palestine,  a weekly paper published by The Zionist Organization of America. February 28, 1936, page 8.

To Clevelanders who remember Rabbi Abba Hillel Silver, who served Tifereth Israel for 46 years and led the American side of the struggle to establish the State of Israel, it is specially important.  Only 13 years old, "Abe" Silver made his first Zionist speech here. For help in finding him, see this page.