1. Gerow D. Brill Collection: Images from the Rare Book and Manuscript Collections Date: 1930 Format: Image Agent: Unknown
2. William Alexander Hammond Collection: Images from the Rare Book and Manuscript Collections Date: 1930 Format: Image Agent: Unknown
3. Perrin Cooper & Company, Tianjin, China : Chinese workers sorting cotton Collection: Highlights from Cornell University's Photography Collections Set: Labor and Work Date: 1930 Format: Image Creator: Unknown
