John Merrill is Sheriff.

• Edward Fowler brings the first buggy to Boone County.

• The Old Court wins the fight, as the law abolishing the Old Court is repealed.

• Secretary of State Henry Clay and John Randolph, a supporter of Andrew Jackson, fight a duel over Randolph's accusation that Clay made a corrupt bargain in supporting Adams for president. Both men misfire, and no blood is shed.
• The American Society for the Promotion of Temperance is founded in Boston, as a passion for moral reform sweeps the land.
• The lyceum movement in American adult education gains popularity. Public lectures and educational societies teaching farmers and workers proliferate.
• French scientist J.N. Niepce produces the first permanent photograph.

• Boone County Tax Lists, 1826.
• Cincinnati in 1826 by B. Drake & E.D. Mansfield