In 1969, the Press acquired the Bollingen Series from Pantheon Books and the Bollingen Foundation. Started in 1940 by Paul and Mary Mellon, the series features many important books in psychology, mythology, archaeology, art history, religion, literature, and related fields, including the collected works of C. G. Jung, Samuel Taylor Coleridge, and Paul Valéry. Notable individual titles include the Wilhelm/Baynes translation of The “I Ching,” or Book of Changes; D. T. Suzuki’s Zen and Japanese Culture; Vladimir Nabokov’s translation of Pushkin’s Eugene Onegin; Erich Neumann’s The Origins and History of Consciousness; Mircea Eliade’s The Myth of the Eternal Return; Isaiah Berlin’s The Origins of Romanticism; Gershom Scholem’s Sabbati Ṣevi; E. H. Gombrich’s Art and Illusion; and Kenneth Clark’s The Nude.

The Bollingen Series was largely completed in 2002 with the publication of its 275th volume, but one part of the series continues to produce new volumes—the A. W. Mellon Lectures in the Fine Arts, which is cosponsored by the National Gallery of Art in Washington, DC, and which the New York Times has called “a great contribution to civilized discourse.”