Cambridge: Belknap Press of Harvard University Press, 1961. First Thus. Two volumes; octavo (24cm.); publisher's cloth in pictorial price-clipped dust jackets; xxxix,,418; vii,,447pp.; frontispieces, five leaves of illus. printed on rectos and versos. External jacket panels toned, especially spines, light foxing to textblock extremities, previous owner's neat ink and pencil marginalia; still, a Very Good, quite sound set overall.