1920: Ku Klux Klan night riders raid Walton, burning crosses in yards of Jews, African-Americans and Catholics

1921: A whole block caught fire in downtown Burlington causing Burlington's earliest major fire

1923: Burlington School and Limaburg School consolidate

1925: New building built for the Boone County Deposit Bank

1926: Dam #38 was constructed in McVille

1935: Walton's Civilian Conservation Corps brings in jobs for men, ages 18-25, from needy families

1937: The Great Ohio River Flood. Largest in Boone County history, the Ohio River reaches 80 feet

1942: C.L Cropper is appointed judge

1942: Fair opens at Burlington-Idlewild Road

1943: Kiger Murder Trial

1944: WWII plane lands in Reuben Kirtley's wheat field

1947: First commercial flight departs/arrives at the Cincinnati/Northern Kentucky International Airport

1950: The historic Phoenix Hotel in Walton catches fire

1952: Boone County Health Department sets up first immunization clinics for pre-school students

1953: Hilda Ramler opens the Caintuckee Grill

1955: The first commercial crash in the region occurred when a TWA aircraft departed from the Greater Cincinnati Airport.

1956: 25,000 people attend Verona Lake Ranch first season

1956: Tornado touches down in Walton demolishing five Beaver Road homes

1958: Florence gets its first phone booths

1958“ L&N Railway caught fire caused by three railroad tank cars that derailed in the center of town a few days prior in Walton

1959: Latonia Race Track is brought to Florence, Kentucky

1960: Construction on Interstate 75 begins

1960: Big Bone Lick becomes a state park

1961: A cargo plane crashed near Constance on approach to the Greater Cincinnati Airport.

1962: President JFK visits the Cincinnati/Northern Kentucky International Airport

1965: American Airlines Flight 383 was making an approach to the Greater Cincinnati Airport in light snow and crashed into the hillside near Constance, killing 58 people and severely injuring 4.

1966: Dam #38 in McVille is demolished

1967: TWA Flight 159 ran off the runway while attempting to take off from the Greater Cincinnati Airport.

1967: TWA Flight 128 struck trees on the Constance hillside and crashed 6,878 feet short of the runway, killing 70 and injuring 12.

1971: Song, Sheriff of Boone County, by Kenny Price, a Boone County native, makes the Top 10 Music Chart

1971: Walton-Verona Auto Sales and Parts Company caught fire. Flames then spread to the Walton Village Barbershop

1974: First Boone County Public Library Opens

1974: F5 tornado destroys property throughout the county

1975: President Johnson visits the Cincinnati/Northern Kentucky International Airport

1976: Florence Mall opens

1984: Caintuckee Grill closes

1984: Boone County inventor, Frank Sinton Milburn dies

1986: Latonia Race Park is renamed Turfway Park

1997: The “Flood of '97,” the Ohio River reaches 65 feet

1999: Fire in Florence, Garten Haus Restaurant, the Florence Barber Shop, a computer store and Bessler's Economy Market were destroyed on the corner of Main Street and Shelby Street.

2002: General Store in Burlington is demolished. Serves as a parking lot and landscaped area for Burlington Baptist Church