Everywhere you look in early progressivism, the influence of Henry George and his ideals as espoused in the book Progress and Poverty can be found. So when doing some digging around this morning, I was surprised to learn that Sanger's father Michael was ardently in favor of George's ideas. My surprise was only in the individual,(my reaction was more like "Oh wow - now, that figures. It makes perfect sense.") for in the aggregate it is impossible to have progressive ideology without Henry George. The Higgins family was so impacted by the work of George that one of Margaret's brothers...