21. The young men of 7 Battalion, Royal Australian Regiment arrive home from a 12 Month deployment to Vietnam, 1968.
22. Nikola Tesla with his Magnifying Transmitter in his Colorado Springs laboratory in 1899.
23. A woman sits atop a pile of rubble and has a cup of tea after a Luftwaffe strike during the Blitz. London, England, 1941.
24. Austro-Hungarian troops executing Serbian civilians, likely ca. 1915.
25. Project engineers demonstrating the cantilever principles of the Forth Bridge in Scotland, 1887.