A lot of seven pastel on paper drawings by Cy Twombly, 1928 to 2011, an American abstract artist who is known for his childlike scribble style and poetic engagement with antiquity. The artworks represent swirling monochrome compositions, each in a different color of the rainbow specter. Each piece is titled Rainbow in the lower left, signed by the artist, and numbered in the lower right. Wooden frame. Collectible Modernist Graphic Art.