Possible Clues:

• Fort Erie's home: Abbr.
• Province beside Manitoba: Abbr
• Prov. of Canada
• Where Windsor is: Abbr.
• It borders four Great Lakes: Abbr.
• Windsor's province (Abbr.)
• Prov. facing Detroit
• St. Catharines home
• Home of Bruce Peninsula Natl. Park
• Prov. north of Minn.