His second book,
Fictions of the Irish Literary Revival: A Changeling Art (Gill & Macmillan; Syracuse University Press), a critical survey of the prose fiction of the Revival, theretofore neglected, and a new reading of the Revival itself, was not published until 1987 though in the meantime Foster published numerous articles and chapters on eighteenth-century poetry, folklore theory, and Irish literature. That book, along with
Colonial Consequences: Essays in Irish Literature and Culture (Lilliput Press, 1991) and numerous articles, identified him as a prominent participant in the lively and contentious literary-critical debates waging in Ireland at the same time as the political conflict known as "
the Troubles". He was associated in his participation with the literary critic
Edna Longley. Foster discovered the poetry of
Seamus Heaney around 1970 and published an early article on it in
Critical Quarterly in 1974. Twenty years later that was followed by an engaged survey of the work in
The Achievement of Seamus Heaney (Lilliput Press, 1995). Although a critic of the political colouration of the cultural activities of the
Field Day Theatre Company, of which Heaney was a director, Foster became a friend of Heaney's and was invited by
Seamus Deane (general editor) to be a contributing editor of the influential 3-volume
Field Day Anthology of Irish Writing (1991). Much of his criticism has been on Irish fiction, culminating in
Irish Novels 1890–1940: New Bearings in Culture and Fiction (Oxford University Press, 2008). This was an attempt to re-orientate critical readings of that crucial period in Irish culture through its overlooked popular fiction by
Oscar Wilde and
Bram Stoker among others, but chiefly by neglected Irish women fiction writers whose work refutes the hoary "no Irish fiction tradition" thesis. == Cultural history ==