A collection of five Mather Work Incentive lithographic posters, including: Depuy (Hal) It May Be Right - It May Be Wrong; Elmes (Willard Frederic) Worry Bags No Game; Next Monday [with] Do you “Explode”? [and] Suppose He Forgot!; numerous tears, some with large tears affecting image and areas of loss, c.920 x 1110mm, Mather & Company, Chicago, 1929 [sold not subject to return] (5)