This work is part of an unfolding mystery of Vivian Maier, a young woman who worked as a nanny in Chicago and photographed the city, as well as all around the world, in the 1950s and 60s. She was unknown to the world until John Maloof, a 29-year-old real estate agent, aquired her negatives a few years ago at an ordinary estate auction. Turns out the collection comprised over 100,000 negatives, including hundreds of undeveloped rolls of film. Also turns out that the photographs aren't just any old photos. Seems like Walker Evans, Diane Arbus, Mary Ellen Mark and Cartier-Bresson all rolled into one, and every photo that Maloof releases onto the internet is just as intriguing and insightful as the last. See the blog he's set up for tons more photographs, and read about how he's discovered her work. There's currently an exhibit of 80+ posthumous prints on view at the Chicago Cultural Center. Field trip!