The Plays The Thing YWCAOriginal vintage advertising poster The Play's the Thing designed by the notable illustrator Lucile Patterson Marsh (1890 1978), published by the Bureau of Social Education and the National Board of the Young Women's Christian Association YWCA, featuring a cast of actors and actresses dressed in middle age period costumes walking down a staircase coming through an arch designed in the shape of a Comedia del Arte theatre mask with a green floral wreath