Humboldt, Alexander von - Autograph Letter Signed 1812 CDVs Opera shown in roles in Richard

shown in roles in Richard Strauss's Der Rosenkavalier

one of the top American composers in the 20th century for both Broadway music and the classical concert hall

signed in Amsterdam

Bold and clear signature on very bright and colorful photo

dated in 1933 in London

Humboldt, Alexander von - Autograph Letter Signed 1812 CDVs Opera shown in roles in RichardGerman geographer, naturalist and explorer (1769 1859), who made very significant contributions to several fields of science including botany, zoology and geophysics. After 5 years (from 1799 through 1804) of travelling through Latin America, Humboldt published a series of large volumes with valuable information, later was the first to propose that humans were changing the world climate. Autograph letter signed, to British writer Helen Maria Williams