Laurence Adolph Steinhardt (October 6, 1892 – March 28, 1950) was an American economist, lawyer, and senior diplomat of the United States Department of State who served as U.S. Ambassador to six countries. He served as U.S. First Minister to Sweden (1933–1937), U.S. Ambassador to Peru (1937–1939), U.S. Ambassador to the Soviet Union (1939–1941), U.S. Ambassador to Turkey (1942–1945), U.S. Ambassador to Czechoslovakia (1945–1948) and United States Ambassador to Canada (1948–1950). He was killed in a U.S. embassy plane crash on March 28, 1950, in Ramsayville, Ontario, Canada, while serving as U.S. Ambassador to Canada. He was the first United States Ambassador to be killed in the line of duty. Biography Laurence A. Steinhardt was born October 6, 1892, at his family home (23 East 92nd Street) in New York City. As a native New Yorker, he was educated at the Franklin School for Boys and graduated from Columbia University with an A.B in 1913, an M.A. in 1915 and an LL.B. in 1915 from Columbia Law School. He became a member of Pi Lambda Phi fraternity (New York) in 1909, National President in 1915, and Supreme Rex for life from 1939 to 1950. He was permanent treasurer of the class of 1913 and class of 1915 Columbia Law School. He was the son of Adolph Maximillian Steinhardt (one of the founders and executive heads of National Enameling and Stamping Co.) and Addie Untermyer Steinhardt (a sister to noted lawyer Samuel Untermyer). He was a nephew of Samuel Untermyer. He married Dulcie Yates Hofmann, daughter of Henry Hofmann (banker) and Ina Maitland Yates Hofmann, on January 15, 1923. He had one daughter, Dulcie-Ann Steinhardt (1925–2001). He practiced accountancy with Deloitte, Plender and Griffiths, was admitted to the New York bar in October 1915, enlisted in the U.S Army 60th Field Artillery in 1916 as a private/sharpshooter, was honorably discharged in 1918 as a sergeant Quartermaster Corps after serving as associate counsel on the Provost Marshal General Staff. He served as counsel for the Housing and Health Division of the War Department in 1919, and was a member of the law firm Guggenheimer, Untermyer and Marshall from 1920 to 1933. Other notable jurists and family members of Guggenheimer, Untermyer and Marshall were Samuel Untermyer, Louis Marshall, Charles S. Guggenheimer, Alvin Untermyer and Irwin Untermyer. In 1932, in active support of Governor Franklin D. Roosevelt’s pre-convention presidential campaign, he joined the inner