Following are the dates of events critical to understanding the mystery surrounding the death of your good friend Jackson Elias. As will be clear, there are many pieces of the puzzle still missing. Where evidence has been found, it has been cited. Dates and events listed in red text are events that occur in the works of H.P. Lovecraft, and are not relevant to Masks of Nyarlathotep. The dates listed in blue text are dates relevant to Berlin: The Wicked City.

• 23rd September 1916
• 5th June 1917
• 11th January 1918
• 16th March 1918
• 18th June 1918
• 3rd December 1918
• 3rd March 1919
• 5th April 1919
• 28th April 1919
• 15th May 1919
• 20th May 1919
• 28th May 1919
• 8th June 1919
• 10th June 1919
• 30th June 1919
• 3rd July 1919
• 18th July 1919
• 30th July 1919