The best-known image of the pioneering anti-trafficking crusader Donaldina Cameron at work was taken in the early 20th century in a garbage-strewn alley in San Francisco’s Chinatown.
Cameron, wearing a full black skirt that fell just above her ankles and a dowdy, small- brimmed hat, gazes toward the camera. A man in a suit stands partway up a ladder propped against a brick building. On a balcony above him, a man who appears to be a plainclothes police officer holds a girl in his arms. She has a long black braid hanging down her back and is the “slave girl” supposedly being rescued.