1919. What Happened Then? London: Wells Gardner & Co. [1921]. More Songs from Leinster. London: John Murray, 1926. St Patrick the Travelling Man: The Story of his Life and Wanderings. London: Ivor Nicholson & Watson Ltd., 1932. Pomona and Co. London: T. Nelson & Sons [1934]. Pomona’s Island. Illustrated by Hilda Figorski. London: T. Nelson & Sons [1935]. The Gentle Mountain. Illustrated by Kathleen Verschoyle. Dublin: Talbot Press [1938]. Reprinted by London: RTS [1939]. Plays The Eyes of the Blind (1906) The Challenge (1909) Hamilton and Jones (1941) Memoir and essay Knockmaroon. London: John Murray 1933. Anthologies, selected Katherine Tynan and C. M. Watts. The Wild Harp. Sidgwick & Jackson, Ltd., 1913. George Herbert Clark. A Treasury of War Poetry: British and American Poems of the First World War, 1914-1917. Boston: Houghton Mifflin, 1917. John William Cunliffe. Poems of the Great War. New York: Macmillan, 1918. Sterling Andrus Leonard. Poems of the War and the Peace. New York: Harcourt, Brace, 1921. Catherine Reilly. Scars Upon My Heart: Women’s Poetry and Verse of the First World War. Virago, London, 1981. Constance M. Ruzich. International Poetry of the First World War: An Anthology of Lost Voices. London: Bloomsbury, 2020. Musical settings of poetry Edward Cuthbert Bairstow. “The Lonesome Girl”, words by W. M. Letts. London: Stainer & Bell, c.1926. Ina Boyle. “If you let sorrow in on you”, words by W. M. Letts. London: Stainer & Bell, 1923, 1926. Ina Boyle. “Easter Snow”, words by W. M. Letts. In Chamber Music, Songs for Voice and Piano. 1940. Ivor Gurney (as Michael Flood). "Cowslip time", words by Winifred M. Letts. [1919-1920]. Ivor Gurney (as Michael Raphoe Flood). “The Fair”, words by Winifred M. Letts. [1920]. Charles Villiers Stanford. “John Kelly,” words by W. M. Letts. In Four Songs for Voice and Piano, Op. 125. London : Stainer & Bell, 1911. Charles Villiers Stanford. A Fire of Turf, Op. 139, words by W. M. Letts. London: Stainer & Bell, 1913. (Contains “A Fire of Turf”, “The Chapel on the Hill”, “Cowslip Time”, “Scared”, “Blackberry Time”, “The Fair”, “The West Wind”). Full text available at International Music Score Library Project (IMSLP) Charles Villiers Stanford. A Sheaf of Songs from Leinster, words by W. M. Letts. London: Stainer & Bell 1914. (Contains “Grandeur”, “Thief of the World”, “A Soft Day”, “Little Peter Morrissey”, “The Bold Unbiddable Child”, “Irish Skies”.) Full text available at International Music Score