George VI at the 1925 Wembley Exhibition in London. For more information on helter-skelters, see this 2009 post.
Photo via The Oddment Emporium and Educated Insolence. The latter tumblr also provided me with this photo...
...of a young lady who became world famous after her murder in 1918. She is...
Grand Duchess Anastasia Nikolaevna of Russia.