From the late 1960s, advertising pioneers like Stephen King at JWT and Stanley Pollitt at BMP delved deep into the minds of consumers to build some of the UK's most famous brands: the Andrex Puppy, the Sugar Puffs Honey Monster, the Smash Martians. '98% Pure Potato' is the untold history of those real-life Mad Men (and women) who first brought consumers into the advertising process. Through interviews with 20 of the industry's very first planners,...