Berlin: 1966, 70, 71. Hardcover. The first three volumes of a multi-volume treatment: vi, 570, 391, 823p., hardbound in series format of openweave tan cloth boards lettered dark green with red paper spine labels, top edges tinted pale green. Cloth has picked up a little light soil, slightest edgewear, ownership stamp on pastedowns with a ditto in blind to title pages, clean, sound, very good copies. These first three cover "enlightened" authors of Greece and Rome, Europe up to 1525 or so, and include religious mavericks such as Meister Eckhart.