Garrison Keillor: most important books

Garrison Keillor is the author, most recently, of Pontoon, his fifth Lake Wobegon novel.He recently told Newsweek about his five most important books.One title on the list:The Folksinger's Wordbook by Irwin Silber.Hymns, blues, murder ballads, miners' laments — the whole culture.Read about the other four books on Keillor's list.--Marshal Zeringue