Duncan Fenton from the Society of William Wallace stands next to a 700-year-old letter believed to have been in the possession of William Wallace, which has returned to National Records of Scotland on January 12, 2012 in Edinburgh, Scotland. (Photo by Jeff J. Mitchell/Getty Images)

A partially frozen Niagara Falls is seen on the American side lit by lights during sub freezing temperatures in Niagara Falls, Ontario March 3, 2014. (Photo by Mark Blinch/Reuters)

A Mark IV tank, part of the parade at the Lord Mayor's Show in London. (Photo by Topical Press Agency/Getty Images). November 1917

Horse racing commentator Joanne Mathews takes a break from the horses and has some fun with a local pig. 22nd March 1956. (Photo by John Pratt/Keystone Features). P.S. All pictures are presented in high resolution.

Men slicing blubber off a large, dead whale. (Photo by Topical Press Agency/Getty Images). Circa 1912

Street fighting in Berlin between Government troops and Spartacists, during the Spartacist uprising which followed Germany's defeat in World War I. (Photo by Keystone/Getty Images). 1919

Seven month old Christine Joy shares her pram with two 5 week old Gunsure Golden Cherry's cocker spaniel pups from Gunsure Kennels in Ashford, Middlesex. 22nd May 1953. (Photo by Fred Morley/Fox Photos)

A recruitment drive during the First World War at Trafalgar Square, London. (Photo by Central Press/Getty Images)