[RIDDLE MASTER TRILOGY.] THE RIDDLE-MASTER OF HED, HEIR OF SEA & FIRE [and] HARPIST IN THE WIND. New York: Atheneum, 1976-1979. Octavo, three volumes, cloth. First editions. First volume has brief signed inscription by McKillip to "Robert" and the two others are signed by McKillip. The complete Riddle-Master Trilogy, comprising THE RIDDLE-MASTER OF HED (1976), HEIR OF SEA & FIRE (1977), and HARPIST IN THE WIND (1979). Barron (ed), Fantasy and Horror (1999) 7-258. Barron (ed), Fantasy Literature 4B-117. Survey of Modern Fantasy Literature IV, pp. 1813-20. Tymn (ed), Fantasy Literature, pp. 137-8. A fine set in fine dust jackets, the last second state with Argo Book device on spine panel. (#162426).