William Butler Yeats. The Poet In Contemporary Ireland. Dublin: Maunsel & Co.,(no date). Publisher's blue cloth, title lettered in gilt to spine, blind stamped on upper cover. Presentation copy inscribed to "Isaac B. Yeats from Lily Yeats & Lolly Yeats, Xmas 1915, with lots of good wishes."
No publication date appears in the book, however it was officially published early in 1916. This copy must have been fresh off the press when Lily inscribed it as a Christmas present in 1915. Isaac B. Yeats was a brother of John B. Yeats (father of W.B., Jack B., and Lily & Lolly)