Question: The Book of Three is the first of five volumes in what series by Ameican author Lloyd Alexander?
Context: Taran Wanderer (1967) is a high fantasy novel by Lloyd Alexander, the fourth of five volumes in "The Chronicles of Prydain".  The series follows Taran, the Assistant Pig-Keeper, as he nears manhood while helping to resist the forces of Arawn Death-Lord. Desert Coral (デザート・コーラル ) is a manga series by Wataru Murayama.  Desert Coral has been published in six languages: Japanese, Thai, English, German, Spanish, and French.  Currently, there are five volumes in Japanese, four volumes in Thai, three volumes in English, and five volumes in German, Spanish, and French.  The fifth and final Japanese volume was released May 2004. The Chronicles of Prydain is a pentalogy of children's high fantasy Bildungsroman novels written by American author Lloyd Alexander.  Henry Holt published one annually from 1964 to 1968; the second earned a 1966 Newbery Honor and the last won the 1969 Newbery Medal. The Castle of Llyr (1966) is a high fantasy novel by Lloyd Alexander, the third of five volumes in "The Chronicles of Prydain".  The story continues the adventures of Taran "Assistant Pig-Keeper", primarily on the Isle of Mona west of Prydain, far from the forces of Arawn, Lord of Death. The Pebbles Box is a 5-LP box set of mid-1960s garage rock and psychedelic rock recordings, primarily by American bands.  Several years later, a similar 5-CD box set was released that was called the "Trash Box".  The Pebbles Box purports to collect the first five volumes of the Pebbles series, although there are fewer songs than on the original LPs: 72 total tracks on the five discs, as compared with 86 on the original LPs.  Also, as is generally true of the CD reissues of these five volumes (though not nearly to the same extent), the tracks differ significantly on all five discs as compared to both the original Pebbles LPs and the later Pebbles CDs in the corresponding volumes; and the surf rock rarities on "Pebbles, Volume 4" have been eschewed entirely. The Book of Three (1964) is a high fantasy novel by Lloyd Alexander, the first of five volumes in "The Chronicles of Prydain".  The series follows the adventures of Taran the Assistant Pig-Keeper, a youth raised by Dallben the enchanter, as he nears manhood while helping to resist the forces of Arawn Death-Lord. The Black Cauldron (1965) is a high fantasy novel by Lloyd Alexander, the second of five volumes in "The Chronicles of Prydain".  For 1966 it was a Newbery Honor book, runner-up for the year's "most distinguished contribution to American literature for children". Trash Box is a 5-CD box set of mid-1960s garage rock and psychedelic rock recordings, primarily by American bands.  This box set is similar to the earlier "Pebbles Box" (a 5-LP box set) and includes almost all of the same recordings in that box set (and in the same order), along with numerous bonus tracks at the end of each disc.  Supposedly, "the Trash Box" collects the first five volumes of the CDs in the Pebbles series (i.e., those released by AIP Records, not to be confused with the 4 earlier CDs that were issued by ESD Records).  However, as is generally true of the CD reissues of these five volumes (though not nearly to the same extent), the tracks differ significantly on all five discs as compared to both the original Pebbles LPs and the later Pebbles CDs in the corresponding volumes; and the surf rock rarities on "Pebbles, Volume 4" have been eschewed entirely.  Overall, there are 109 tracks in the box set (excluding the introduction and ending cuts) as compared to 101 songs on the individual CDs and 72 tracks in the "Pebbles Box".  Although most of the recordings on "the Trash Box" were released at some point on one of the individual Pebbles albums, several of the songs have not appeared elsewhere in the Pebbles series.  Inexplicably, one of these songs is the well-known hit "I Fought the Law (but the Law Won)" by the Bobby Fuller Four (on Disc Four) – which is also included in the "Pebbles Box" – in place of the much rarer "Wine Wine Wine" by Bobby Fuller that appears on "Pebbles, Volume 2". The anime series "Code Geass" by Sunrise has been adapted into various series of light novels. First serialized in Kadokawa Shoten's "The Sneaker" magazine, they are divided into two separate series corresponding with the series two seasons.  The first series, "Code Geass: Lelouch of the Rebellion", spanned five volumes with the first, labelled as volume 0, released in Japan on April 28, 2007 and the last on February 29, 2008.  All five volumes in the first series of novels have been released in English by Bandai Visual as licensed in December 2007.  The first volume was released on November 2008 and the last one on February 23, 2010. "Yotsuba&! " is a manga written and drawn by Kiyohiko Azuma, and published in Japan by ASCII Media Works in the monthly magazine "Dengeki Daioh".  Eighty-two chapters have been published; 81 of these have been collected in twelve "tankōbon" volumes, with further chapters appearing in "Dengeki Daioh" to be collected in "tankōbon" format over time.  The series was licensed in English by ADV Manga, with five volumes published; volume six was scheduled to be published February 2008 but was delayed indefinitely.  Yen Press announced at New York Comic Con 2009 that they had acquired the North American license for the English release of the manga; volume six was released in September 2009 along with new translations of the first five volumes, with later volumes to follow.  The series has been licensed in France by Kurokawa, in Spain by Norma Editorial, in Germany by Tokyopop Germany, in Italy by Dynit, in Finland by Punainen jättiläinen, in Korea by Daiwon C.I., in Taiwan by Kadokawa Media, in Vietnam by TVM Comics, and in Thailand by NED Comics.
Answer: The Chronicles of Prydain