Historical clue formulations

• ___ Ste. Marie, Mich. — 2017-01-23
• ___ Ste. Marie — 2016-06-21
• River waterfall — 2012-11-09
• Waterfall or rapid — 2012-01-14
• ___ Ste. Marie — 2011-12-27
• ___ Ste. Marie, Mich. — 2007-03-12
• ___ Ste. Marie — 2004-02-22
• ___ Ste. Marie — 1998-05-10
• Waterfall — 1997-05-11
• _____ Ste. Marie — 1995-05-16
• Waterfall — 1994-10-02