Four American lawn tennis racquets circa 1900 to 1930, i) THE HUMDINGER by H. J Bancroft, strung with silk ii) THE BRYANT by Horsman, with convex wedg

Four American lawn tennis racquets circa 1900 to 1930, i) THE HUMDINGER by H. J Bancroft, strung with silk ii) THE BRYANT by Horsman, with convex wedge iii) THE SEARS by Wright & Ditson, with convex wedge, 1920 (Kuebler) iv) THE STADIUM by Harry C. Lee, the first with a slotted shaft, as stated by Kuebler, circa 1910