1. A book published between 1900-1909

2. A book published between 1910-1919

3. A book published between 1920-1929

4. A book published between 1930-1939

5. A book published between 1940-1949

6. A book published between 1950-1959

7. A book published between 1960-1969

8. A book published between 1970-1979

9. A book published between 1980-1989

10. A book published between 1990-1999