This article is not about the mathematician Isadore Singer.
Isidore Singer (1859–1939) was an editor of the Jewish Encyclopedia and founder of the American League for the Rights of Man. Singer was originally born in Hranice (now in the Czech Republic) and became literary secretary to the French ambassador in Vienna, Austria. From 1887, he worked in Paris in the press bureau of the French foreign office and was active in the campaign on behalf of Alfred Dreyfus. In moved to New York in 1895 where he raised the money for the Jewish Encyclopedia he had envisioned and subsequently edited the twelve-volume work (1901–1906) himself.
