From Baker's Biographical Dictionary of Musicians, 8th Ed.

Mittler, Franz, Austrian composer and pianist; b. Vienna, April 14, 1893, d. Munich Dec. 28, 1970.  He studied in Vienna with Heuberger and Prohaska; later in Cologne with Fritz Steinbach and Carl Friedberg.  From 1921 to 1938 he lived in Vienna as a pianist and accompanist; in 1939 he settled in N.Y.  He wrote an opera, Rafaella (Duisburg, 1930); Piano Trio; a number of piano pieces.  In America he wrote numerous popular songs (In Flaming Beauty, From Dreams of Thee, Soft through My Heart, Over the Mountains);also light piano suites: Manhattan Suite, Suite in 3/4 Time, Newsreel Suite, Boogie-Woogie, Waltz in Blue, 1-Finger Polka.
    Bibl.:  D. Mittler Battipaglia, F. M.: Composer, Pedagogue and Practical Musician (diss., Univ. of Rochester 1974).