The National Library of Ireland has the world's largest collection of material related to the poet William Butler Yeats, including this copy of The Cat and the Moon and Certain Poems. It belonged to the poet's wife, George Yeats, and features a unique manuscript revision of the printed version of the poem "Leda and the Swan" by WB Yeats himself. The Cat and the Moon is part of the process which led to the creation of Yeats' great work The Tower (1928), the poems for which appeared across several volumes and in various periodicals during the 1920s. Published in July 1924 by the Cuala Press, versions of five of the poems in this volume would appear in The Tower four years later.