Partygoers in Cardiff, England refused to let the rain dampen their Christmas spirits on “Thirsty Thursday”, December 19, 2018. Christmas partygoers got into the party spirit last night as they headed out for some festive fun up and down the country. (Photo by Huw Evans Picture Agency)

An elephant enjoys its back being scrubbed by the keeper on March 1, 1950. (Photo by Fox Photos/Getty Images)

A new monorail service in Houston, Texas, ready for its inaugural service. (Photo by Evans/Three Lions/Getty Images). Circa 1950

Two elderly men smoking pipes of opium on a terrace in Korea. (Photo by Bert Hardy/Picture Post/Getty Images). August 1950

Battle-weary American troops withdraw from Yong San in Korea. (Photo by Keystone/Getty Images). 1950

Playful little Asian girl having fun with Christmas decorations, holding up pine cones over eyes against decorated Christmas tree at Christmas time. Christmas lifestyle. Celebrating Christmas. Holiday and festive vibes. (Photo by d3sign/Getty Images)

This 1950s photo provided by the Estate of Vivian Maier and John Maloof Collection shows Maier in a self-portrait as she looks into a storefront wearing a hat in New York. New research about Maier shows the enigmatic Chicago nanny was obsessive about honing her skills as a photographer starting in 1950. (Photo by Vivian Maier/Estate of Vivian Maier and John Maloof Collection via AP Photo)