André Édouard Marty (1882-1974) Come, on wings of joy we'll fly... (London transport poster). 1931. Lithograph. Sight: 590 x 760, printed in color. Fine proof on vellum, with no apparent margins or lettering. Frame (not examined outside the frame). The text at the foot of the full poster is taken from a poem by William Blake: "Come on wings of joy we'll fly / To where my bower hangs on high; / Come and make thy calm retreat / Among green leaves and blossoms sweet."