When Justin K. Thannhauser (1892–1976) brought his collection of modern art to the Solomon R. Guggenheim Museum in 1965, it was his crowning achievement after more than a half-century as one of Europe's most influential and distinguished collectors and dealers. This volume presents the astonishing collection in full, offering a concentrated survey of works by such modern masters as Braque, Cézanne, Degas, Gauguin, Manet, Picasso, Pissarro and Van Gogh, among others.