~1917
What was the difference in days between the Gregorian and Julian calendars in 1917?
What year did the events in the documentation take place?
What major event happened in June 1917 involving Germany and London?
What event occurred in the United States on May 21, 1917?
What happened in Montreal, Quebec, Canada on November 22, 1917?
What was established on May 22, 1917, in the U.S.?
What event occurred in Milwaukee on November 24, 1917?
When was the World Book Encyclopedia first published?
What event led to the United States' involvement in WWI?
What happened on October 4 during WWI?
What happened to the British armed merchantman SS Laurentic in January 1917?
What event occurred in Halifax, Nova Scotia on December 6, 1917?
What happened on November 17 in the United States?
What organization was founded in the United Kingdom?
When did the United States sever diplomatic relations with Germany?