Historical clue formulations

• North-of-the-border sports org. — 2021-10-25
• Gridiron org. with the Grey Cup — 2018-10-18
• Grid org. with a 110-yard field — 2017-05-17
• Org. of the Argonauts and the Alouettes — 2016-03-13
• Edmonton Eskimos' org. — 2015-12-19
• North-of-the-border grid org. — 2015-01-21
• Calgary Stampeders' grp. — 2012-01-19
• North-of-the-border grid org. — 2010-06-01
• Grey Cup sports org. — 2009-03-14
• Sports org. with the Grey Cup — 2002-06-30
• Grey Cup grp. — 1998-10-31
• Toronto Argonauts' org. — 1997-11-21