Clarkson was one of the bevy of teams who began their ice hockey program shortly after the end of World War I.

They played one another at least once a year until warm weather and the Great Depression forced the Larries to suspend operations.

In 1950 both schools were founding members of the Tri-State League, the first official conference for NCAA ice hockey.

Being in the same conference for several decades has led to both teams playing one another on a consistent basis as well as common but infrequent postseason meetings.

From 1970 through 1982, Clarkson and St. Lawrence jointly held the North Country Thanksgiving Festival, an in-season tournament.