Ray Saintonge wrote:
There is a quote from the Swedish Academy's announcement of the Nobel Prize for Steinbeck. There is a quote from Battle Hymn of The Republic by Julia Ward Howe, explaining the title of the book. There's a quote of Woody Guthrie's reaction to the film version of the book.
"Battle Hymn of the Republic" was published in 1862, and is thus in the public domain anyway.
Oops. I knew it was a Civil War song, so I feel silly. Well, the other two are good examples anyway.