Eugene Smith's picture of a Marine drinking from a canteen during Battle of Saipan. Postal Service released a Masters of American Photography series of commemorative stamps in 2002 this image was chosen as representative of his body of work.
I really like this picture. Whenever we see pics of people doing black girls hair, there is always frowning and angry faces like its such a struggle. Here the little girl is smiling and content while her mother(?) is gently and patiently tending to.