Legendary Danish-American tenor (1890-1973), the preeminent Wagnerian tenor for three decades, from the 1920s to the early 1950s.  

Set of 2 signed United States Constitution 1937 Sesquicentennial stamps (a double autograph) along with unsigned 8 x 10 inch photo in role, likely Wagner's Siegfried.  Both in excellent condition, not sold separately.