Saul Bellow (1915-2005) was a Nobel-Prize-winning American novelist, born in Canada to parents of Russian Jewish descent.
For the GRE Literature exam, associate the following works with Saul Bellow. In each case, a summary knowledge will suffice.
1. Herzog
2. Seize the Day
3. Henderson the Rain King
4. The Adventures of Augie March
(He has some important later works, but they're too recent for the GRE folks.)
It's probably not worth adding Bellow to your GRE reading list.