What year was the Jefferson Memorial finished?
1943
1931
1931
1931
1931
1922
1931
1922
1931
1922
1931
1922
1931
1922
1931
1922
1931
1922
1931
1922
1931
1922
1931
1921
1922
1931
1923
1915
1921
1922
1931
1932
1924
1923
1915
1921
1922
1931
1939
1932
1924
1923
1915
1921
1922
1931
1939
1932
1924
1923
1915
1921
1922
1927
1931
1939
1932
1924
1923
1915
1921
1922
1927
1931
1939
1932
1924
1926
1923
1915
1921
1922
1927
1931
1939
1932
1924
1926
1923
1915
1921
1922
1927
1939
1932
1913
1924
1923
1915
1921
1922
1926
1927
1939
1932
1924
1923
1915
1902
1921
1922
1927
1940
1939
1932
1913
1924
1923
1915
1931.
1921
1922
1940
1926
1922.
1927
1939
1932
1924
1923
1915
1940
1902
1921
1913
1935
1939
1940
1932
1924
1931.
1926
1923
1915
1927
1921
1935
1922.
1933
1940
1902
1939
1932
1913
1924
1923
1915
1935
1921
1933
1940
1923.
1926
1927
1939
1931.
1935
1932
1924
1923
1915
1933
1940
1903
1902
1921
1922.
1935
1933
1939
1940
1932
1913
1924
1926
1923
1915
1936
1923.
1921
1935
1933
1927
1940
1931.
1903
1939
1932
1924
1936
1922,
1923
1915
1935
1931,
1922.
1902
1921
1933
1940
1884