Humboldt, Alexander von - Autograph Letter Signed 1812 _more Italian soprano (1894-1948)

Italian soprano (1894-1948)

including: Alexander Kramarov

dated in pencil in London

Russian-born American mezzo (1900-1973)

Blind stamped by photographers at Studio Intran

Humboldt, Alexander von - Autograph Letter Signed 1812 _more Italian soprano (1894-1948)German 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