Vivian Maier's photography is arguably the most popular street work produced in decades, and it was discovered years after her death. A nanny by profession, her Mary Poppins appearance and honest, bold style have taken the photography world by storm. Her work recently had its first major gallery appearance in New York at Howard Greenberg Gallery. This video is from the Chicago Tonight show at WTTW in Chicago where Maier was based. You can learn more about Vivian Maier at www.vivianmaier.com.