During the 1974 Avco Cup Finals against Gordie Howe and the Houston Aeros, the team's two home games were played at the Randhurst Twin Ice Arena in suburban Mount Prospect.

Just prior to their third season, the team was sold to Cougars players Ralph Backstrom[1] and Dave Dryden, and player-coach Pat Stapleton after the original owners, Walter and Jordon Kaiser, were unable to secure funds to build a new arena.

The Cougars were the first North American major professional hockey team to feature player numbers on the front of their jersey in the upper right corner.

Four other NHL teams (Dallas, the New York Islanders, San Jose, and Tampa Bay) features similar front number treatments at points between 2007 and 2015.

Chicago would be hopelessly outmatched in the AVCO World Trophy Final against the Houston Aeros, though, who featured hockey legend Gordie Howe and his sons, Mark and Marty.

(With the death of the Cougars, the WHA had departed all of the three biggest markets in the United States: the New York Golden Blades shifted to south Jersey early in the 1973-74 season, while the Los Angeles Sharks moved to Detroit in 1974.)

The International Amphitheatre was unavailable for the second round because it had booked a production of Peter Pan, featuring former Olympic gymnast Cathy Rigby in the title role.

For reasons that were never stated, the Amphitheatre staff decided the hockey season was over, so they uncovered and dismantled the copper pipes used to chill the ice.