Sinnott, Robert (attributed to) (American, twentieth century). Cover Designs for Twice Upon a Time. Circa 1950. Acrylic painting for the front and back cover of the childrenês book •Twice Upon a Timeê. The image features two boys and two black dogs on a light blue background. Edges torn and stained, not affecting image. 18 3/8 x 12 _”. Good.