Moreover, the "muster all possible aid to protect this small, peaceful and highly civilized people" (Serbia's Secret War: Propaganda and the Deceit of History by Philip J. Cohen, David Riesman,Texas A&M; University Press, 1996 page 10) comes directly (copy-paste) from the ''Appeal of the Croatian Academicians to the World of Civilisation' pamphlet. Existence of any Einstein's letter was not mentioned anywhere else except in the Cohen's book and the New York Times.