Helen Levitt was an American photographer and cinematographer. She was particularly noted for her street photography around New York City. David Levi Strauss described her as "the most celebrated and least known photographer of her time." A retrospective exhibition of Levitt's work, In the Street, was shown at The Photographers' Gallery in London from October 2021 to February 2022.
Along with Helen Levitt's stunning photographs is the best essay I have ever read about photography written by James Agee. This is truly a beautiful book.