Ken Perenyi, author of Caveat Emptor: The Secret Life of an American Art Forger, teaches readers how to create fakes, fool experts, and laugh their way to the bank.

Sometimes magnificent visual art takes root in the humblest of soils. Advertisements painted on old barns, tattoos, fruit crate labels, hot rod embellishments -- all these media and many other non-galleried forms have hosted and fostered esthetic delights that satisfy any rigorous definition of art. In Jeremy Cooper's expansive, eye-popping new history of the humble postcard in the hands of artists, we see that this small pasteboard canvas has played its own large role in the history of twentieth-century art.