Historic events in New Mormon History on 3/20
1888: Wilford Woodruff officially proposes organizing the First Presidency. After three days of meetings in which apostles oppose the proposal and criticize George Q. Cannon in particular, Woodruff formally withdraws the motion on 23 Mar.
Source: See
The Mormon Hierarchy - Extensions of Power by D. Michael Quinn
To see the whole database in chronological order,
Click here. Note that I'm not done entering all the information. While most of these facts come from Quinn's book, I'm seeking the primary sources for each, but this will take a long time.