. . . . . . "Ralph Greenley Johnstone (September 18, 1880 \u2013 November 17, 1910) was the first American person to die while piloting an airplane that crashed. He and Archibald Hoxsey were known as the \"heavenly twins\" for their attempts to break altitude records."@en . . "1880-09-18"^^ . . . . "Ralph Johnstone"@en . . . . . . "1880"^^ . . "5946"^^ . . "1910-11-17"^^ . . . "Parsons, Kansas, U.S"@en . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "Denver, Colorado, U.S."@en . . . . . . . . . . . . . . . "1880-09-18"^^ . . . . . . . . . . . . . "Ralph Greenley Johnstone (September 18, 1880 \u2013 November 17, 1910) was the first American person to die while piloting an airplane that crashed. He and Archibald Hoxsey were known as the \"heavenly twins\" for their attempts to break altitude records."@en . . . . . . "1910"^^ . "Ralph Greenley Johnstone"@en . . . . . . . . . . . . "1112391289"^^ . . "1910-11-17"^^ . . "Ralph Greenley Johnstone"@en . . . . . "8832848"^^ . . . "Ralph Greenley Johnstone"@en . . . . . . . . . . . . . . . . . . . . . . . "Ralph Greenley Johnstone"@en . . . .