made in his later plays, especially in On Baile's Strand (1904), Deirdre (1907), and his dance play The King of the Great Clock Tower (1934). Young poet The family returned to London in 1887. In March 1890 Yeats joined the Hermetic Order of the Golden Dawn, and with Ernest Rhys co-founded the Rhymers' Club, a group of London-based poets who met regularly in a Fleet Street tavern to recite their verse. Yeats later sought to mythologize the collective, calling it the "Tragic Generation" in his autobiography, and published two anthologies of the Rhymers' work, the first one in 1892 and the second one in 1894. He collaborated with Edwin Ellis on the first complete edition of William Blake's works, in the process rediscovering a forgotten poem, "Vala, or, the Four Zoas". Yeats had a lifelong interest in mysticism, spiritualism, occultism and astrology. He read extensively on the subjects throughout his life, became a member of the paranormal research organisation "The Ghost Club" (in 1911) and was influenced by the writings of Emanuel Swedenborg. As early as 1892, he wrote: "If I had not made magic my constant study I could not have written a single word of my Blake book, nor would The Countess Kathleen ever have come to exist. The mystical life is the centre of all that I do and all that I think and all that I write." His mystical interests—also inspired by a study of Hinduism, under the Theosophist Mohini Chatterjee, and the occult—formed much of the basis of his late poetry. Some critics disparaged this aspect of Yeats's work. His first significant poem was "The Island of Statues", a fantasy work that took Edmund Spenser and Shelley for its poetic models. The piece was serialized in the Dublin University Review. Yeats wished to include it in his first collection, but it was deemed too long, and in fact, was never republished in his lifetime. Quinx Books published the poem in complete form for the first time in 2014. His first solo publication was the pamphlet Mosada: A Dramatic Poem (1886), which comprised a print run of 100 copies paid for by his father. This was followed by the collection The Wanderings of Oisin and Other Poems (1889), which arranged a series of verse that dated as far back as the mid-1880s. The long title poem contains, in the words of his biographer R. F. Foster,