In April 1847, a group of pioneers left Omaha, Nebraska and headed west. Their group consisted of 147 men, three women, and two children. Their journey would cover more than 1,000 miles, and cross the Rocky Mountains. This small group would pave the way for more than 70,000 people to make the same journey. On Monday, April 5, 2010 you can start following the same journey as volunteers reenact the 1847 Pioneer Trek via Twitter. More info at http://twhistory.org/1847-pioneer-trek/. The TwHistory project began in early 2009 with the first Twitter reenactment of the Battle of Gettysburg over a period of several weeks. Later that year a high school class reenacted the Cuban Missile Crisis. TwHistory is based on the idea that historical reenactments can take place online and have positive effects for all involved. In school settings these virtual reenactments can increase engagement while providing opportunities for students to research personal journals and other primary source documents. In order to organize, study, and preserve these online reenactments we have created http://TwHistory.org