Fine half-length photograph of this Armenian-born violinist and composer in formal dress. Signed "H. Gudenian," with a 2-measure autograph musical quotation identified as "Paganini Concerto" to upper portion. Inscribed "à Mr. Le Lieutenant v. Ballasko" [Lieutenant Carl Edler von Ballasko], in all likelihood a relation of the noted WWII fighter pilot Otto Edler von Ballasko (1919-2005).
Autograph signature dated 1944 in ink on a performance program featuring Hambourg, Eva Turner, Sir Adrian Boult, and the National Symphony Orchestra at the Royal Albert Hall in a Jubilee Concert in aid of the London Orchestral Association Restoration Fund, January 8, 1944.
Signed program for a recital with noted American baritone (1901-1967), featuring works of Donizetti, Beethoven, Brahms, Liszt, Gilbert and Sullivan, and others, at the Arion Musical Club, Milwaukee, April 18, 1951