Timeline of investigations into Trump and Russia (July–December 2018)
After three prominent legal analysts (Geoff Shepard, Benjamin Wittes, Jack Goldsmith, and Stephen Bates) filed separate lawsuits seeking its unsealing and Chief Judge Beryl A. Howell, of the U.S. District Court for the District of Columbia, on October 11 ordered the disclosure, the National Archives releases a set of documents from the Watergate investigation as a possible "road map" for the Mueller probe, including a would-be indictment against former president Richard Nixon.
Sources: CNN The Washington Post