The Grolier Society 1915-1920 Vols I through XVI. Dar brown covers w/gilt border on front, spine lettering and foredges. Texts are clean and unmarked, boards and bindings sturdy. Shelf and edgewear to boards, light foxing on some endpages. Spines show sustantial wer. Vol. XVI is lighter color as the first volume about World War I published in 1920, after the first 15 volumes.