M. Montague-Nathan: A History of Russian Music (1914).

Rosa Newmarch: The Russian Opera (New York, 1914).

Rosa Newmarch: Tschaikowsky (London, 1900-1908).

Edward Stillmann-Kelley: Tschaikowsky as a Symphonist (New York, 1906).

Modest Tchaikovsky: Peter Ilyitch Tchaikovsky (2 vols., Eng. transl. by Rosa Newmarch), (London, 1906).

In German

N. D. Bernstein: Anton Rubinstein (Leipzig, 1911).

M. Glinka: Gesammelte Briefe; transl. by Findeisen (1908).

Nikolai Kaschkin: Erinnerungen an P. I. Tschaikowsky (Leipzig, 1896).

Ivan Knorr: Tschaikowsky (Berlin, 1908).