My great-grandmother, who was born in the 1880s, passed away when I was about 11 years old. Looking back, it is fairly obvious now that she was a hoarder on a colossal scale, but since this predated reality television, we tended just to say she was a packrat. As we cleaned out her house in rural Missouri, there was something special waiting: two boxes brimming with postcards. These were not of the “wish you were here” variety depicting washed-out hotel …