FU-SHENG, Ku, (American, 1935- ): ''Into a World of Blue & Green'', Color Relief Engraving, 7 7/8'' x 13 3/4'', signed lower right, dated '63, marked artist's proof lower left, label verso indicates title, artist, and the fact that this is an edition size limited to this one example, contemporary black painted frame 14 1/2'' x 19 1/2''.