Sept. 24 to Dec. 23, 1888
157 Ripper letters received during this time, with the longest gap of not receiving a letter being 5 days.
Dec. 23, 1888 to Jan. 8, 1889
16 day gap between receipt of Ripper letters.
Dec. 23, 1888 to Jan. 7, 1889
Van Gogh cut his ear on the night of Dec. 23 and was admitted to the hospital the next morning. He remained in the hospital until his release on Jan. 7. The 16 day gap in the Ripper letters matches to Van Gogh cutting his ear and being in the hospital, unable to send his Ripper letters. Vincent van Gogh was Jack the Ripper!
(image: Van Gogh, Self-Portrait with Bandaged Ear, 1889)
The book is not yet available, but you can see more matches and hidden images at VincentAliasJack.com