The Indiscreet Jewels (translated from the French by Sophie Hawkes), 1993. ,
, The Breath of Parted Lips: Voices from the, 2001.
, The Robert Frost Encyclopedia, 2001.
, Robert Frost: Collected Poems, Prose and Plays, 1995.
, The Annotated Waste Land with Eliot's Contemporary Prose, 2005.