This month marks the 75th anniversary of the publication of The Grapes of Wrath, John Steinbeck’s classic novel about the poverty-stricken Joad family.

The book won the National Book Award and the Pulitzer Prize, and was key to Steinbeck winning the Nobel Prize for Literature in 1962. The moving family saga inspired songs by Woody Guthrie and Bruce Springsteen's 1995 album, The Ghost of Tom Joad.

In the novel, the Joads are forced off of their land in Oklahoma and travel to California, suffering the misfortunes of the homeless in the Great Depression.

Steinbeck's best-selling book has been recently republished by Penguin/Viking. The Grapes of Wrath has been studied in schools and colleges around the world, and was made into a movie in 1940, starring Henry Fonda, Jane Darwell and Russell Simpson.

However, farmers, women’s groups and librarians were among those who resented its depiction of California’s treatment of workers.