This book of articles from Cycle World will be of value to historians, potential buyers & present owners. Included are road tests, new model intros & road impressions. Models covered: YD3, YDS2, 3C Big Bear, 6C, YL1, YR2, DT1, Trailmaster, L5T, TD1, RD56, YM1, YR1 & Ascot. 180 illus.