Crossword clues for Letter before 63-Down 3 lettersAnswerClueWYELetter before 63-DownRHOGreek letter that sounds like 63-DownTHEWith 63- and 64-Across, privileged info, and a hint to the circled lettersDOUBLEAGENTChange a letter in 63-Across to spell...MIDDLEAMERICAJust plain folks, and a hint to the central letters in 18-, 20-, 61- and 63-AcrossDOVERCapital suggested by the circled letters and by the starts of 17- and 63-Across and 11- and 29-DownITSRAININGWith 63-Across, the opening lines to a nursery rhyme suggested by this puzzle's circled lettersFOURWith 63- and 64-Across, meeting place suggested both literally and graphically by this puzzle's circled letters