""Masters of Popular Painting: Modern Primitives of Europe and America"" is a book written by Holger Cahill. The book explores the work of modern primitive painters from Europe and America, who were largely self-taught and created art that was often inspired by their own personal experiences and cultural backgrounds. The book features over 100 full-color reproductions of paintings by artists such as Grandma Moses, Horace Pippin, and Morris Hirshfield,...