Flexible-participation lotteries, a treatise on flexible-participation prize-drawings, chance games and other sales promotion enterprises, operted for a consideration; including "Bank night." "Catalina night," "Country-store night," "Jubilee night," Bader's cafeteria drawing, the Denver shoe store drawing, newspaper circulation drawings, filling station drawings, "Customers' pay day," and the like; together with their historical background, the underlying principles of law and construction involved, and the reasons for anti-lottery legislation. / By Francis Emmett Williams.