An update:
2007 The Road by Cormac McCarthy (Alfred A. Knopf)
2006 March by Geraldine Brooks (Viking)
2005 Gilead by Marilynne Robinson (Farrar)
2004 The Known World by Edward P. Jones (Amistad/ HarperCollins)
2003 Middlesex by Jeffrey Eugenides (Farrar)
2000 Interpreter of Maladies by Jhumpa Lahiri (Mariner Books/Houghton Mifflin)
1999 The Hours by Michael Cunningham (Farrar, Straus & Giroux)
1998 American Pastoral by Philip Roth (Houghton Mifflin)
1995 The Stone Diaries by Carol Shields (Viking)
1994 The Shipping News by E. Annie Proulx (Charles Scribner's Sons)
1992 A Thousand Acres by Jane Smiley (Alfred A. Knopf)
1990 The Mambo Kings Play Songs of Love by Oscar Hijuelos (Farrar)
1989 Breathing Lessons by Anne Tyler (Alfred A. Knopf)
1988 Beloved by Toni Morrison (Alfred A. Knopf)
1987 A Summons to Memphis by Peter Taylor (Alfred A. Knopf)
1985 Foreign Affairs by Alison Lurie (Random House)
1983 The Color Purple by Alice Walker (Harcourt Brace)
1981 A Confederacy of Dunces by the late John Kennedy Toole (a
posthumous publication) (Louisiana State U. Press)
1973 The Optimist's Daughter by Eudora Welty (Random)
1961 To Kill A Mockingbird by Harper Lee (Lippincott)
1953 The Old Man and the Sea by Ernest Hemingway (Scribner)
1947 All the King's Men by Robert Penn Warren (Harcourt)
1940 The Grapes of Wrath by John Steinbeck (Viking)
1939 The Yearling by Marjorie Kinnan Rawlings (Scribner)
1937 Gone With the Wind by Margaret Mitchell (Macmillan)
1935 Now in November by Josephine Winslow Johnson (Simon & Schuster)
1932 The Good Earth by Pearl S. Buck (John Day)
1930 Laughing Boy by Oliver Lafarge (Houghton)
1922 Alice Adams by Booth Tarkington (Doubleday)
1921 The Age of Innocence by Edith Wharton (Appleton)
1918 His Family by Ernest Poole (Macmillan)
Done about 1/3, I think.

