OK - I'm finally ready to add some books.
1901 - 1910:
Call of the Wild by Jack London (1903)
1911 - 1920:
Ethan Frome by Edith Wharton (1911)
1921 - 1930:
We by Yevgeny Zamyatin (1921)
1931 - 1940:
Grapes of Wrath by John Steinbeck (1939)
1941 - 1950:
L'Étranger by Albert Camus (1942)
1951 - 1960:
To Kill A Mockingbird by Harper Lee (1960)
1961 - 1970:
The Left Hand of Darkness by Ursula K. LeGuin (1969)
1971 - 1980:
The Gods Themselves by Isaac Asimov (1972)
1981 - 1990:
Skallagrigg by William Horwood (1987)
1991 - 2000:
Cryptonomicon by Neal Stephenson (1999)