Tonight’s episode of Mad Men on AMC, at 10PM EST, features a prominent reference to John Dos Passos’ U.S.A. trilogy. Recent sales numbers indicate that many readers only pick up The 42nd Parallel and fail to take in the full where to buy real dostinex trilogy. This is a shame. Library of America has a handsome all-in-one book for sale. Or Mariner Books has individual volumes for sale. Either way, the full trilogy is an interlocking mosaic that cannot be fully appreciated in fragments.