1922, 1924, 1927, 1928, 1929, 1930, 1931, 1932, 1933, 1934, 1935, 1936, 1937, 1938, 1939, 1940, 1941, 1942, 1943, 1945, 1947, 1948, 1949, 1950, 1951, 1952, 1955, 1956, 1958, 1959, 1960, and 1962. American Geographical Society of New York. GeoJSON index map of polygons using the OpenIndexMaps 1.0 schema. Complex geometry including inset maps (Multipolygon) and multiple editions of som... American Geographical Society of New York.