The Blues were one of the six teams added to the NHL in the 1967 expansion, along with the Minnesota North Stars, Los Angeles Kings, Philadelphia Flyers, Pittsburgh Penguins, and California Seals.

St. Louis was the last of the six expansion teams to gain entry into the League; the market was chosen over Baltimore at the insistence of the Black Hawks owners, James D. Norris and Arthur Wirtz.

Under Bowman, the Blues dominated the West for the next two seasons, becoming the only expansion team to compile a winning record, and they captured division titles by wide margins each year.

While the first Blues teams included fading veterans like Doug Harvey, Don McKenney and Dickie Moore, the goaltending tandem of veterans Glenn Hall and Jacques Plante proved more durable, winning a Vezina Trophy in 1969 behind a sterling defense that featured players like skilled defensive forward Jim Roberts, team captain Al Arbour and hardrock brothers Bob and Barclay Plager.

Phil Goyette won the Lady Byng Trophy for the Blues in 1970 and New York Rangers castoff Red Berenson became the expansion team's first major star at center.

In hopes of saving the franchise, Francis persuaded St. Louis-based pet food giant Ralston Purina to buy the team, arena, and the $8.8 million debt.

Longtime Ralston Purina chairman R. Hal Dean said that he intended to keep the Blues as a subsidiary only temporarily until a more stable owner could be found, but he would only accept offers from interests who would keep the team in St. Louis.

Ten players reached at least 20 goals, including Wayne Babych, future Hall of Famer Bernie Federko, and team captain Brian Sutter.

His successor, William Stiritz, wanted to refocus on the core pet food business, and his personal sporting interests were in horse racing rather than hockey.

[10][11] Ralston then filed a $60 million anti-trust lawsuit in U.S. District Court, claiming that the NHL broke federal antitrust laws and breached the duty of good faith and fair dealing by voting to reject the sale and transfer of the Blues to Hunter's group.

On July 27, 1983, ten days before the deadline, the NHL approved a bid from a group of St. Louis investors led by businessman Harry Ornest for the team and the arena.

In fact, several of the Blues' young stars, such as Rob Ramage, Joe Mullen and Gilmour, were main cogs in the Flames' 1989 Stanley Cup win.

General manager Ron Caron made astute moves, landing forwards Brett Hull, Adam Oates and Brendan Shanahan, defenseman Al MacInnis and goaltender Curtis Joseph, among others.

Mike Keenan was hired as both general manager and coach before the abbreviated 1994–95 season, with the hope that he could end the postseason turmoil that Blues fans had endured for years.

Keenan instituted major changes, including trades that sent away fan favorites Brendan Shanahan and Curtis Joseph, as well as the acquisition of the legendary-but-aging Wayne Gretzky and goaltender Grant Fuhr, both from the declining Los Angeles Kings.

Defenseman Chris Pronger (acquired from the Hartford Whalers in 1995 for Brendan Shanahan), Keith Tkachuk, Pavol Demitra, Pierre Turgeon, Al MacInnis and goaltender Roman Turek kept the Blues a contender in the NHL.

On September 29, 2005, it was announced that the Lauries had signed an agreement to sell the Blues to SCP Worldwide, a consulting and investment group headed by former Madison Square Garden president Dave Checketts.

The former New York Rangers goaltender promptly made multiple blockbuster deals, picking up Jay McKee, Bill Guerin and Manny Legace from free agency, and bringing Doug Weight back to St. Louis after a brief (and productive) stopover in Carolina.

Brad Boyes, picked up from the Boston Bruins in exchange for Wideman, became the fastest Blues player to reach 40 goals since Brett Hull, doing so during the 2007–08 season.

After spending the first half of the 2008–09 season at or near the bottom of the Western Conference standings, the Blues began to turn things around behind the solid goaltending of Chris Mason.

They faced the third-seeded Vancouver Canucks in the first round, but despite the team's tremendous run to end the season, the Blues would ultimately lose the series in a quick four-game sweep.

[20] During the 2011 off-season, the team signed many key free agents, including Brian Elliott, Scott Nichol, Kent Huskins, Jason Arnott and Jamie Langenbrunner.

The Blues also dealt away Paul Stastny to the Winnipeg Jets at the trade deadline for their first-round pick as they won only 23 games of their remaining 51, but they still had a chance to get into the playoffs on the last day of their season against the Colorado Avalanche.

[23] On November 19, 2018, the Blues fired head coach Mike Yeo after starting the season with a 7–9–3 record and replaced him with Craig Berube on an interim basis.

[25] This resurgence included an eleven-game winning streak between February and March, in large part thanks to the emergence of the eventual Calder Trophy nominee, rookie goaltender Jordan Binnington.

On February 12, 2020, the Blues suffered another loss as defenseman Jay Bouwmeester suddenly collapsed on the bench in a game against the Anaheim Ducks, and would not come back to play again in the season.

However, in an ironic twist the Cards purchased a controlling interest in KTRS in 2005, and once again preferred to air preseason baseball over regular season ice hockey.

John Kelly (son of Dan) and Jamie Rivers are the current team for television coverage, while Scott Warmann, Alexa Datt, and Bernie Federko present the pre-game and post-game shows.

It operated for over 10 years, from 1994 to 2005, when its owner decided not to resume the magazine after the 2004–05 NHL lockout (one final oversized "goodbye" issue was distributed the first two home games of the 2005–06 season).

Blues director of entertainment, Jason Pippi, commented that they played Country Roads by John Denver, "was a bit of an mistake... because people love to sing along to that song".