Lesa Ní Mhunghaile is of the view that the translations of Irish poems in this publication were influenced by Ossian, but also were considered by the author to improve on the originals.
Besides his more important writings (see below) he also wrote "Anecdotes on Chess in Ireland", a paper contributed to Charles Vallancey's Collectanea de Rebus Hibernicis.
He also left works in manuscript, including a journal of his travels and materials for Lives of the Painters, Sculptors, and Engravers of Ireland.
[1] After his time in Italy, Walker settled down in a house called St. Valerie, Bray, County Wicklow, with art treasures and an extensive library.
It contains poems to Walker's memory by Eyles Irwin, Henry Boyd, William Hayley, and Robert Anderson.