The voters' adoption of a new Michigan Constitution (AP-1, DFP-1);
Gov. George W. Romney's fiscal reform campaign, including a proposed state income tax that was defeated by the Legislature (AP-2, DFP-4);
A boom year for the automobile industry (AP-6, DFP-2);
Racial demonstrations, including the June 23 Detroit Walk to Freedom that drew an estimated crowd of 125,000 and was known as "the largest civil rights demonstration in the nation's history" up to that date (AP-7, DFP-3);
A botulism outbreak that (i) killed two Grosse Ile women in March tied to canned tuna, (ii) resulted in two additional deaths in October tied to smoked whitefish, and (iii) caused five deaths in the south traced to Michigan-packaged smoked chubs; some of the botulism was traced to smoked fish canned in Grand Haven (AP-4, DFP-7);
The ouster of Joe Collins led by former Gov. John Swainson and selection of Zolton Ferency as chairman of the state Democratic Party at the February convention in Grand Rapids (AP-9, DFP-6);
Detroit's bid to host the 1968 Summer Olympics, ending with the International Olympic Committee's selection of Mexico City on October 18 (AP-8, DFP-8);
The April escape of four prisoners from the Michigan State Prison in Jackson leading to an intensive manhunt (AP-11 [tie], DFP-9);
The disappearance and murder of Joan Watkins, a 28-year-old housewife and mother from Brooklyn, Michigan (AP-11 [tie], DFP-10);
The impact on Michigan of the assassination of President John F. Kennedy (AP-3);
The July 27 collapse of a bridge into the Clinton River, causing injury to 48 persons, during a golf tournament at Hillcrest Country Club in Macomb County; and