At the Reflecting Pool on the National Mall, a man wearing a straw hat and holding a megaphone gives instructions or information to a group of demonstrators. In the background, the Washington Monument is visible in the hazy August light. The crowd—Black and white, women and men—listens attentively; individual persons hold umbrellas against the overcast sky. The image documents the organizational infrastructure of the March on Washington: Beyond the speeches at the Lincoln Memorial, coordinating hundreds of thousands of participants on site required targeted communication through marshals and volunteers. It illustrates the communal, interracial participation that characterized the March on August 28, 1963.