The American "Keynotes Series" -- 50 volumes.
50 variant-colored volumes of 25 titles (of 29). Boston: Roberts Brothers, 1893-1896. Original terra-cotta or light blue or light green cloth, decoratively stamped in dark green. Beginning with "George Egerton's" 1893 novel KEYNOTES, for which the series would be named, John Lane of London published, over the course of five.....