Background
Stevenson, Markley was born on December 25, 1885 in Camden, New Jersey, United States. Son of Richard Graham and Mary (Markley) Stevenson.
Stevenson, Markley was born on December 25, 1885 in Camden, New Jersey, United States. Son of Richard Graham and Mary (Markley) Stevenson.
Civil Engineer, Lafayette College, Easton, Pennsylvania, 1907. M.L.A., Harvard University, 1923.
Civil engineer, General Coal Company, 1907-1912, Philadelphia and Reading Railway Company, 1908-1909. General sales engineer, General Crushed Stone Company, 1914-1918. Assistant landscape architect, Olmsted Brothers, 1923-1924.
Private practice since 1924.
Instructor landscape design and construction, Pennsylvania School of Horticulture for Women, Ambler, Pennsylvania, 1925-1927. Department landscape architecture, University of Pennsylvania, 1925-1932.
Regional inspector, United States National Park service, 1933-1936. Consultant landscape architect, bureau of parks, Commonwealth of Pennsylvania, 1936.
Chief, site planning unit, United States War Department, 1941.
Consultant landscape architect, Philadelphia City Planning Commission, 1945-1946. Consultant landscape architect, Department Army, since 1946, The American Battle Monuments Commission, since 1948. Member firm of Wheelwright, Stevenson and Laugren.
Member firm of Wheelwright, Stevenson and Laugren. Served in United States Navy during World War I. Member Philadelphia Art Commission, since 1952.
Member American Society Landscape Architects since 1925, fellow since 1946 (secretary 1939-1944, president, 1945-1949). Member American Society Civil Engineers, 1917-1937.
Clubs: Century Association (New York).
Married Helen Dunn, April. Children: Michael, Patricia.