This is the final in a series of articles about the Boston Red Sox “Impossible Dream’’ season and the Summer of 1967 in Boston. Learn more about this project.

It was the final day of the season, partly cloudy over Fenway and newly crisp, as if the weather had noted the turn to October and shed a dozen degrees from the day before.

Boston had won a do-or-die game the previous afternoon to tie the Minnesota Twins and stay alive on this Sunday, Oct. 1, and some fans had stuck around through the night, warmed by the strange thrill of a possible pennant, camped by the ballpark with standing-room dreams.

The hometown crowds fell in love with the ’67 Sox, and the nickname “Cardiac Kids’’ stuck because of their many close wins. —Dan Goshtigian/File

Boston Red Sox pitcher Jim Lonborg’s bunt touched off a five-run, game-winning rally in their season finale against the Minnesota Twins at Fenway Park on Oct. 1, 1967. —Frank O’Brien/Globe Staff/file

Red Sox owner Tom Yawkey and outfielder Carl Yastrzemski talked before a late-September game at Fenway Park. —Frank O’Brien/Globe Staff/file

Senator Ted Kennedy and Vice President Hubert Humphrey took in the Twins-Red Sox game on Saturday, Sept. 30. —Frank O’Brien/Globe Staff/File

Ricky Williams, 10-year-old son of Boston Red Sox manager Dick Williams, sat with outfielder George Thomas at Fenway Park on the final weekend of the regular season. —Frank O’Brien/Globe Staff/File

Fans crowded Jersey Street outside Fenway Park after the Red Sox defeated the Twins on the last game of the regular season. —Bettmann Archive

As an incentive to his teammates, pitcher Jim Lonborg wrote $10,000 on the locker room chalkboard before the Sept. 30 game. That is the amount each player would get for winning the American League pennant. —Getty Images

Boston Red Sox pitcher Jim Lonborg was lifted by his teammates after his complete-game 5-3 win over the Minnesota Twins at Fenway Park on the final regular-season game of the year. —Associated Press

The bleachers were standing-room only during the game that Sunday. —Bob Dean/Globe Staff/File

Boston Red Sox players celebrated after their final regular-season game in 1967, clinching at least a tie for the American League pennant. Carl Yastrzemski (right) smoked a cigar. —Frank O’Brien/Globe Staff/File

John Bingham of Hanson and Mike Yebba of Billerica listened to a World Series game on Oct. 9, 1967, on the 26th floor of the Prudential Building. —Jack Sheahan/Globe Staff