The Leningrad Codex ( [Leningrad Book]; ) is the oldest complete manuscript of the Hebrew Bible in Hebrew, using the Masoretic Text and Tiberian vocalization. According to its colophon, it was made in Cairo in 1008 CE (or possibly 1009). Some have proposed that the Leningrad Codex was corrected against the Aleppo Codex, a slightly earlier manuscript that was partially lost in the 20th century. However, Paul E. Kahle argues that the Leningrad manuscript was more likely based on other, lost manuscripts by the ben Asher family. The Aleppo Codex is several decades older, but parts of it have been missing since the 1947 anti-Jewish riots in Aleppo, making the Leningrad Codex the oldest complete codex of the Tiberian mesorah that has survived intact to this day. In modern times, the Leningrad Codex is significant as the Hebrew text reproduced in (1937), (1977), and (2004–present). It also serves as a primary source for the recovery of details in the missing parts of the Aleppo Codex. Name The Leningrad Codex (a codex is a handwritten book bound at one side, as opposed to a scroll) is so named because it has been housed at the National Library of Russia in Saint Petersburg since 1863 (before 1917 named Imperial Public Library). In 1924, after the Russian Revolution, Petrograd (formerly SaintPetersburg) was renamed Leningrad, and, because the codex was used as the basic text for the since 1937, it became internationally known as the "Leningrad Codex". Although the city's name was restored to the original StPetersburg after the dissolution of the Soviet Union in 1991, the National Library of Russia requested that "Leningrad" be retained in the name of the codex. Nonetheless, the Codex is occasionally referred to as the Codex Petersburgensis or Codex Petropolitanus, or the St. Petersburg Codex. This is ambiguous as, since 1876, these appellations refer to a different biblical codex (MS. Heb B 3) which is even older (916 CE), but contains only the later Prophets. Contents The biblical text as found in the codex contains the Hebrew letter-text along with Tiberian vowels and cantillation signs. In addition, there are masoretic notes in the margins. There are also various technical supplements dealing with textual and linguistic details, many of which are painted in geometrical forms. The codex is written on parchment and bound in leather. The Leningrad Codex, in extraordinarily pristine condition after a millennium, also provides an example