What year was the first official MLB World Series played?
1903
1903
1903
1903
1903
1903
1903
1903
1905
1903
1904
1905
1903
1904
1902
1905
1903
1904
1902
1905
1903
1904
1902
1905
1903
1904
1902
1905
1903
1904
1902
1905
1903
1904
1902
1905
1903
1904
1902
1905
1903
1904
1902
1905
1903
1904
1902
1907
1905
1903
1904
1902
1907
1905
1903
1904
1902
1907
1905
1903
1904
1921
1902
1907
1905
1908
1904
1921
1902
1907
1905
1908
1904
1915
1921
1902
1907
1926
1905
1908
1923
1904
1915
1921
1902
1907
1926
1905
1908
1923
1904
1915
1921
1902
1907
1926
1905
1908
1923
1904
1915
1921
1902
1907
1922
1926
1905
1908
1904
1915
1921
1902
1907
1923
1922
1905
1908
1905.
1904
1926
1915
1921
1902
1907
1923
1908
1922
1926
1915
1921
1902
1907
1905.
1903,
1908
1923
1922
1926
1921
1907
1908
1915
1923
1905.
1922
1921
1907
1926
1908
1915
1903,
1923
1905.
1921
1907
1922
1926
1908
1915
1905.
1921
1907
1923
1903.
1903,
1922
1926
1908
1915
1921
1905.
1907
1923
1901
1922
1908
1903.
1903,
1926
1915
1921
1901
1907
1923
1905.
1905,
1908
1920
1901
1913
1922
1926
1903,
1921
1904,
1907
1905.
1920
1908
1915
1901