Beatrix Potter and The Three Cups
It appears that Miss Potter did not stay at the Three Cups when she visited Lyme Regis on holiday in 1904. She gave her address as "Burley, Lyme Regis". However, she made a number of sketches around the town including one looking down Broad Street which clearly shows The Three Cups. The drawing referred to appears on page 92 of "Beatrix Potter's Letters", published by Frederick Warne & Co. The original is in the Victoria and Albert Museum in London but the publisher is the owner of all rights, copyrights and trademarks in the Beatrix Potter character names and illustrations.
I am indebted to Judy Taylor Hough of The Beatrix Potter Society for kindly providing this information for me.