John Bush becomes Sheriff with Archibald Huston as his deputy.

• President Jefferson sends William Clark back to Big Bone Lick in the first organized vertebrate paleontology expedition in the U.S.

• Shakers establish South Union in Western Kentucky.

• Robert Fulton navigates the first successful steamboat journey, chugging up the Hudson River from New York to Albany in 32 hours.
• In an effort to keep the fledgling United States out of the ongoing conflict between Britain and France, Congress bans all foreign trade and forbids ships to set sail for foreign ports.
• Former U.S. Vice President Aaron Burr is tried for treason after attempting to create an independent nation on the western shores of the Mississippi River. He is acquitted of all charges.

• Boone County Tax Lists, 1807.