Petoskey Stone & Mackinac Bridge Dedication | June 28

Custer’s Rise & Michigan’s Pollution Fight | June 29

On this day in 1863, Monroe native George Armstrong Custer was promoted to brigadier general and took command of the Michigan Cavalry Brigade, playing a key role at Gettysburg. Also, in 1928, Michigan launched its first major pollution control effort to protect lakes and streams.

Petoskey Stone & Mackinac Bridge Dedication | June 28

On this day in 1965, Michigan made the unique Petoskey Stone its official state rock, with a historic signing attended by Ella Jane Petoskey, granddaughter of Chief Petosegay. And in 1958, Governor G. Mennen Williams dedicated the Mackinac Bridge—the world’s largest suspension bridge—linking Michigan’s Upper and Lower Peninsulas.

College World Series & Teju Cole’s Birth | June 27

On this day in 1947, the first College World Series baseball games took place in Kalamazoo, Michigan, where the University of California swept Yale, led by future president George W. Bush. Also, in 1975, acclaimed writer Teju Cole was born in Kalamazoo.

Michigan Flag & State Motto Unveiled | June 26

On this day in 1911, Michigan adopted its current state flag, featuring the coat of arms with symbols of peace, defense, and wildlife — all topped with the state motto, “If you seek a pleasant peninsula, look about you.”

Detroit Cholera Epidemic & Quarantine Rules | June 25

On this day in 1832, Detroit issued strict medical guidance to combat a cholera epidemic, restricting boat traffic and public movement amid fears and outdated treatments. Church bells were silenced to prevent panic during the deadly outbreak.