signed and dated 'Moore '80' lower left; further titled '"Ideas for sculpture"' on the reverse pencil, wax crayon, watercolour, pastel wash and ballpoint pen on Bockingford white wove paper 24.4 x 34.9 cm (9 5/8 x 13 3/4 in.) Executed in 1980, this work is registered in the archives of the Henry Moore Foundation under number 80 (266).