The Seven-Per-Cent Solution

26 April 1940, Islington, London, England, UK

29 August 1928, Bournemouth, Dorset, England, UK

30 January 1937, Greenwich, London, England, UK

11 April 1932, Cleveland, Ohio, USA

29 May 1928, Berlin, Germany

December 26, 1929 in Etterbeek, Belgium

8 July 1907, Dover, Kent, England, UK

5 March 1932, Czechoslovakia

5 March 1939, Hampstead, London, England, UK

1931, West Ham, London, England, UK

23 April 1922, Henley-on-Thames, Oxfordshire, England, UK

26 March 1934, New York City, New York, USA

5 January 1931, San Diego, California, USA

3 January 1935, Chesterfield, Derbyshire, England, UK

6 October 1932, Birmingham, Warwickshire, England, UK

22 November 1936, Nottingham, England, UK

April 8, 1930 in Vienna, Austria

22 May 1907, Dorking, Surrey, England, UK

1930 in Dundee, Scotland, UK

21 October 1933, Whitechapel, London, England, UK

7 February 1904, Kensington, London, England, UK

14 September 1936, Hamilton, Scotland, UK

January 25, 1945 in Santa Monica, California, USA