A comprehensive timeline of events in the prehistory and history of Ohio. Hyperlinks to the multitude of specific articles about Ohio's history.

This site from The History Place provides a timeline of American history between 1784 and 1790. Mentions many famous people and events of the era. Links to John Adams, Thomas Jefferson, Samuel Adams, James Madison, the Constitution, Bill...

Earth's magnetic poles have reversed themselves throughout its long history. Find out what scientists know about these reversals. A geologic time line shows when the reversals occurred.

A timeline of events significant to Indiana and the United States preceding and following the enactment of the Northwest Ordinance of 1787.