21. Tiananmen Square incident, uncropped photo, 1989.
22. The Italian ship Stella Polare during the Duke of Abruzzi’s expedition to the North Pole, 1899.
23. Dutch soldiers helping Formula One driver Innes Ireland put his Lotus back on track during free practice, Zandvoort, 1965.
24. Infant gas mask in England, 1939.
25. Windows on the World restaurant, on the 106th and 107th floors of the WTC North Tower, 2000.
