Possible Clues:

• Region (Abbr.)
• Guam, for one (Abbr.)
• AK or HI, once
• Alaska, once (Abbr.)
• Guam, for one: Abbr.
• Yukon, e.g.: Abbr.
• Yukon, for one (Abbr.)
• La., once
• Dakota, once (Abbr.)
• Guam, e.g.: Abbr.