21 Acoma Man by Edward S. Curtis, 1905. 35mm USslide of the photogravure, one of a kind positive master set, 1976, special Kodacrome black & white process By webmaster | Published December 30, 2025 | Full size is 1573 × 1573 pixels 20g Robert Flaherty, Nanook of the North, 1922. USp 21b Mrs. William T. Sedgwick, Acoma, The Sky City, 1926. USbook