Collection: Patrick H. Pearse Letters Letter ID: L.262/DD Year: 1911 Source: The letters of P.H. Pearse, Edited by Séamus Ó Buachalla, Gerrards Cross, Bucks.: Smythe, 1980.
Collection: Ezra Pound Letters 1907-1941 Letter ID: 262_p328 Year: 1933 Source: D. D. Paige, ed., The Letters of Ezra Pound, 1907-1941. London : Faber and Faber, 1951.
Collection: James Joyce Letters Letter ID: vol1p109b Year: 1917 Source: Letters of James Joyce. Vol. 1. Edited by Stuart Gilbert. London: Faber & Faber, 1957.
Collection: Selected Correspondence of Charles Ives Letter ID: 262 Year: 1934 Source: Tom C. Owens, ed. (2007). Selected Correspondence of Charles Ives. Berkeley: University of California Press.
Collection: Ezra Pound Letters 1907-1941 Letter ID: 220_p281 Date: 02-01-1927 Source: D. D. Paige, ed., The Letters of Ezra Pound, 1907-1941. London : Faber and Faber, 1951.