There's a lot written about Vivian Maier - maybe too much - but the story of a reclusive genius street photographer undiscovered in her own time touches us deeply.
From Wikipedia: Vivian Maier (1926 – 2009) was an American street photographer. Maier worked for about forty years as a nanny, mostly in Chicago, pursuing photography during her spare time. She took more than 150,000 photographs during her lifetime, primarily of the people and architecture of Chicago, New York City, and Los Angeles.
During her lifetime, Maier's photographs were unknown and unpublished; many of her negatives were never printed. A Chicago collector, John Maloof, acquired some of Maier's photos in 2007 and later linked his blog to a selection of Maier's photographs on the image-sharing website Flickr. The results went viral. Her life and work have been the subject of books and documentary films, including the film Finding Vivian Maier (2013), which was nominated for the Academy Award for Best Documentary.