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% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for Washington or McKinley: Abbr. 3 letters:

MTN: Washington or McKinley: Abbr.
MTS: Washington and McKinley: Abbr.
MTS: McKinley and Washington: Abbr.
MTS: Washington and McKinley, e.g.: Abbr.
MTS: Washington, McKinley et al.: Abbr.