University of Bristol - Historical Photographs of China reference number: Sw19-013. Khaki cloth Eastman Negative Album, 12 cm x 16 cm. 153 negatives (sized 3.25 inches x 5.5 inches -:- 92mm x 147mm). The album was later labelled P1/V on the back cover. Nankou Pass (Nankow Pass or Juyong Pass or Juyongguan), The Great Wall of China.