Eminent Viennese composer (1825–1899), known as the ‘Waltz King,’ best known for such all-time favorites as ‘The Beautiful Blue Danube’ and the ‘Emperor Waltz’ and for the operetta staple Die Fledermaus. Large pencil signature on an off-white 8.25 x 6.5 album page. Trimmed right edge, slight edge toning, and show-through from a signature of Eben Tourjee, founder of the New England Conservatory of Music, on the reverse, otherwise fine condition. Accompanied by a 1925 letter of authenticity by American composer Arthur S. Josselyn, whose father had obtained signature during Strauss’s 1872 visit to the World’s Peace Jubilee in Boston, and an unsigned blue silk bookmark from the event. RRAuction COA.