Codex in the context of Swivel chair

Medieval literature is a broad subject, encompassing essentially all written works available in Europe and beyond during the Middle Ages (that is, the one thousand years from the fall of the Western Roman Empire ca. AD 500 to the beginning of the Renaissance in the 14th, 15th or 16th century, depending on country). The literature of this time was composed of religious writings as well as secular works. Like modern literature, it is a broad field of study, from the utterly sacred to the exuberantly profane, touching all points in between. Works of literature are often grouped by place of origin, language, and genre.

A Gospel Book, Evangelion, or Book of the Gospels (Greek: Εὐαγγέλιον, Evangélion) is a codex or bound volume containing one or more of the four Gospels of the Christian New Testament – normally all four – centering on the life of Jesus of Nazareth and the roots of the Christian faith. The term is also used for a liturgical book, also called the Evangeliary, from which are read the portions of the Gospels used in the Mass and other services, arranged according to the order of the liturgical calendar.

Liturgical use in churches of a distinct Gospel book remains normal, often compulsory, in Eastern Christianity, and very common in Roman Catholicism and some parts of Anglicanism and Lutheranism.

Vellum is prepared animal skin or membrane, typically used as writing material. It is often distinguished from parchment, either by being made from calfskin, rather than the skin of other animals or simply by being of a higher quality. Vellum is prepared for writing and printing on single pages, scrolls, and codices (books).

Modern scholars and experts often prefer to use the broader term "membrane", which avoids the need to draw a distinction between vellum and parchment, as it is very hard to determine the type of animal involved, let alone its age, without detailed scientific analysis.

The history of books begins with the invention of writing, as well as other inventions such as paper and printing; this history continues all the way to the modern-day business of book printing. The earliest knowledge society has on the history of books actually predates what we came to call "books" in today's society, and instead begins with what are called either tablets, scrolls, or sheets of papyrus. The current format of modern novels, with separate sheets fastened together to form a pamphlet rather than a scroll, is called a codex. After this invention, hand-bound, expensive, and elaborate manuscripts began to appear in codex form. This gave way to press-printed volumes and eventually led to the mass-market printed volumes that are prevalent today. Contemporary books may even start to have less of a physical presence with the invention of the e-book. The book has also become more accessible to the disabled with the invention of Braille as well as audiobooks.

The earliest forms of writing began with etching into stone slabs, evolving over time to include palm leaves and papyrus in ancient times. Parchment and paper later emerged as important substitutes for bookmaking, as they increased durability and accessibility. Ancient books were made from a variety of materials depending on the region's available resources and social practices. For instance, in the Neolithic Middle East, the cuneiform tablet was part of a larger clay-based toolkit used for bureaucracy and control. In contrast, while animal skin was never used to write books in eastern and southern Asia, it became a mainstay for prestige manuscripts in the Middle East, Europe, and the Americas. Similarly, papyrus and even paper were used in different regions at various times, reflecting local resource availability and cultural needs. Across regions like China, the Middle East, Europe, and South Asia, diverse methods of book production evolved. The Middle Ages saw the rise of illuminated manuscripts, intricately blending text and imagery, particularly during the Mughal era in South Asia under the patronage of rulers like Akbar and Shah Jahan. Prior to the invention of the printing press, made famous by the Gutenberg Bible, each text was a unique, handcrafted, valuable article, personalized through the design features incorporated by the scribe, owner, bookbinder, and illustrator.

A book is a written work of substantial length by one or more authors. They can be distributed in various forms including as printed books, audiobooks, and electronic books (ebooks). Books are broadly classified into fiction (containing invented content, often narratives) and non-fiction (containing content intended as factual truth).

The term can also refer to the physical or electronic object that contains such a work. Modern printed books are typically composed of many pages bound together and protected by a cover. This is known as the codex format. Codices have been created for centuries and were used even before printed books were available to create manuscript books by hand. Older formats include scrolls and clay tablets.

In law, codification is the process of collecting and restating the law of a jurisdiction in certain areas, usually by subject, forming a legal code, i.e. a codex (book) of law.

Codification is one of the defining features for most civil law jurisdictions. In common law systems, such as that of English law, codification is the process of converting and consolidating judge-made law or uncodified statutes enacted by the legislature into codified statute law.

The Constitution of the Athenians, also called the Athenian Constitution (Ancient Greek: Ἀθηναίων πολιτεία, romanized: Athēnaiōn Politeia), is a work by Aristotle or one of his students. The work describes the constitution of Athens. It is preserved on a papyrus roll from Hermopolis, published in 1891 and now in the British Library. A small part of the work also survives on two leaves of a papyrus codex, discovered in the Fayum in 1879 and now in the papyrus collection of the Egyptian Museum of Berlin.

A Torah scroll (Hebrew: סֵפֶר תּוֹרָה, romanized: Sefer Torah, lit. 'Book of Torah'; pl. סִפְרֵי תוֹרָה, Sifrei Torah) is a handwritten copy of the Torah, meaning the five books of Moses (the first books of the Hebrew Bible). The Torah scroll is mainly used in the ritual of Torah reading during Jewish prayers. At other times, it is stored in the holiest spot within a synagogue, the Torah ark, which is usually an ornate curtained-off cabinet or section of the synagogue built along the wall that most closely faces Jerusalem, the direction Jews face when praying.

The text of the Torah is also commonly printed and bound in book form for non-ritual functions, called a Chumash (plural Chumashim; "five-part", for the five books of Moses), and is often accompanied by commentaries or translations.

The Vatican Apostolic Library (Latin: Bibliotheca Apostolica Vaticana, Italian: Biblioteca Apostolica Vaticana), more commonly known as the Vatican Library or informally as the Vat, is the library of the Holy See, located in Vatican City, and is the city-state's national library. It was formally established by Pope Sixtus IV on June 15, 1475, by the papal bull Ad decorem militantis ecclesiae, although it is much older. It is one of the oldest libraries in the world and contains one of the most significant collections of historical texts. It has 75,000 codices from throughout history, as well as 1.1 million printed books, which include some 8,500 incunabula.

The Vatican Library is a research library for history, law, philosophy, science, and theology. The Vatican Library is open to anyone who can document their qualifications and research needs. Photocopies for private study of pages from books published between 1801 and 1990 can be requested in person or by mail.

In Muslim tradition the Quran is the final revelation from God, Islam's divine text, believed to be delivered to the Islamic prophet Muhammad through the angel Jibril (Gabriel). Muhammad's revelations were said to have been recorded orally and in writing, through Muhammad and his followers up until his death in 632 CE. These revelations were then compiled by first caliph Abu Bakr and codified during the reign of the third caliph Uthman (r. 644–656 CE) so that the standard codex edition of the Quran or Muṣḥaf was completed around 650 CE, according to Muslim scholars. This has been critiqued by some western scholarship, suggesting the Quran was canonized at a later date, based on the dating of classical Islamic narratives, i.e. hadiths, which were written 150–200 years after the death of Muhammad, and partly because of the textual variations present in the Sana'a manuscript. Muslim scholars who oppose the views of the Western revisionist theories regarding the historical origins of the Quran have described their theses as "untenable".

More than 60 fragments including more than 2000 folios (4000 pages) are so far known as the textual witnesses (manuscripts) of the Qur'an before 800 CE (within 168 years after the death of Muhammad), according to Corpus Coranicum. However, in 2015, experts from the University of Birmingham discovered a single folio later called the Birmingham Quran manuscript, which is possibly the oldest manuscript of the Quran in the world. Radiocarbon analysis to determine the age of the manuscript revealed that this manuscript could be traced back to some time between 568 and 645 AD. Selected manuscripts from the first four centuries after the death of Muhammad (632–1032 CE) are listed below.

The Torah (/ˈtɔːrə, ˈtoʊrə/; Biblical Hebrew: תּוֹרָה, romanized: tōrā, lit. 'instruction, teaching, or law') is the compilation of the first five books of the Hebrew Bible, namely the books of Genesis, Exodus, Leviticus, Numbers and Deuteronomy. The Torah is also known as the Pentateuch (/ˈpɛntəˌt(j)uːk/) or the Five Books of Moses. In Rabbinical Jewish tradition it is also known as the Written Torah (תּוֹרָה שֶׁבִּכְתָב, Tōrā šebbīḵṯāv). If meant for liturgic purposes, it takes the form of a Torah scroll (Hebrew: ספר תורה Sefer Torah). If in bound book form, it is called Chumash, and is usually printed with the rabbinic commentaries (perushim).

In rabbinic literature, the word Torah denotes both the five books (תורה שבכתב, "Torah that is written") and the Oral Torah (תורה שבעל פה, "Torah that is spoken"). It has also been used, however, to designate the entire Hebrew Bible. The Oral Torah consists of interpretations and amplifications which according to rabbinic tradition have been handed down from generation to generation and are now embodied in the Talmud and Midrash. Rabbinic tradition's understanding is that all of the teachings found in the Torah (both written and oral) were given by God through the prophet Moses, some at Mount Sinai and others at the Tabernacle, and all the teachings were written down by Moses, which resulted in the Torah that exists today. According to the Midrash, the Torah was created prior to the creation of the world, and was used as the blueprint for Creation. Though hotly debated, the general trend in biblical scholarship is to recognize the final form of the Torah as a literary and ideological unity, based on earlier sources, largely complete by the Persian period, with possibly some later additions during the Hellenistic period.

The Voynich manuscript is an illustrated codex, hand-written in an unknown script referred to as Voynichese. The vellum on which it is written has been carbon-dated to the early 15th century (1404–1438). Stylistic analysis has indicated the manuscript may have been composed in Italy during the Italian Renaissance. The origins, authorship, and purpose of the manuscript are still debated, but currently scholars lack the translation(s) and context needed to either properly entertain or eliminate any of the possibilities. Hypotheses range from a script for a natural language or constructed language, an unreadable code, cypher, or other form of cryptography, or perhaps a hoax, reference work (i.e. folkloric index or compendium), glossolalia or work of fiction (e.g. science fantasy or mythopoeia, metafiction, speculative fiction).

The first confirmed owner was Georg Baresch, a 17th-century alchemist from Prague. The manuscript is named after Wilfrid Voynich, a Polish book dealer who purchased it in 1912. The manuscript consists of around 240 pages, but there is evidence that some of the pages are missing. The text is written from left to right, and some pages are foldable sheets of varying sizes. Most of the pages have fantastical illustrations and diagrams, some crudely coloured, with sections of the manuscript showing people, unidentified plants and astrological symbols. Since 1969, it has been held in Yale University's Beinecke Rare Book and Manuscript Library. In 2020, Yale University published the manuscript online in its entirety in their digital library.

A book is a written work of substantial length created by one or more authors. They can be distributed in various forms such as printed books, audiobooks, and electronic books (ebooks). Books are broadly classified into fiction, containing invented narrative or other imaginary content; and non-fiction, containing content intended as factual truth.

The term may also refer to the physical or electronic object containing such a work. Modern books are typically printed in a codex format, composed of many pages bound together and protected by a cover. Before the wide adoption of the modern printing press, codices were used to create handwritten manuscripts. Older writing mediums include scrolls and clay tablets.

A lost literary work (referred throughout this article just as a lost work) is a document, literary work, or piece of multimedia, produced of which no surviving copies are known to exist, meaning it can be known only through reference, or literary fragments. This term most commonly applies to works from the classical world, although it is increasingly used in relation to modern works. A work may be lost to history through the destruction of an original manuscript and all later copies.

Works—or, commonly, small fragments of works—have survived by being found by archaeologists during investigations, or accidentally by laypersons such as, for example, the finding Nag Hammadi library scrolls. Works also survived when they were reused as bookbinding materials, quoted or included in other works, or as palimpsests, where an original document is imperfectly erased so the substrate on which it was written can be reused. The discovery, in 1822, of Cicero's De re publica was one of the first major recoveries of a lost ancient text from a palimpsest. Another famous example is the discovery of the Archimedes Palimpsest, which was used to make a prayer book almost 300 years after the original work was written. A work may be recovered in a library, as a lost or mislabeled codex, or as a part of another book or codex.

Recto is the "right" or "front" side and verso is the "left" or "back" side when text is written or printed on a leaf of paper (folium) in a bound item such as a codex, book, broadsheet, or pamphlet.

In double-sided printing, each leaf has two pages – front and back. In modern books, the physical sheets of paper are stacked and folded in half, producing two leaves and four pages for each sheet. For example, the outer sheet in a 16-page book will have one leaf with pages 1 (recto) and 2 (verso), and another leaf with pages 15 (recto) and 16 (verso). Pages 1 and 16, for example, are printed on the same side of the physical sheet of paper, combining recto and verso sides of different leaves. The number of pages in a book using this binding technique must thus be a multiple of four, and the number of leaves must be a multiple of two, but unused pages are typically left unnumbered and uncounted. A sheet folded in this manner is known as a folio, a word also used for a book or pamphlet made with this technique.

A library catalog (or library catalogue in British English) is a register of all bibliographic items found in a library or group of libraries, such as a network of libraries at several locations. A catalog for a group of libraries is also called a union catalog. A bibliographic item can be any information entity (e.g., books, computer files, graphics, realia, cartographic materials, etc.) that is considered library material (e.g., a single novel in an anthology), or a group of library materials (e.g., a trilogy), or linked from the catalog (e.g., a webpage) as far as it is relevant to the catalog and to the users (patrons) of the library.

The earliest library catalogs were lists, handwritten or enscribed on clay tablets and later scrolls of parchment or paper. As codices (books with pages) replaced scrolls, so too did library catalogs become like handwritten ledgers and, in some cases, printed books. During the late 18th century through mid-19th century, cataloguing on paper slips or cards gradually replaced ledgers and books as the main medium for library catalogs, and in the 20th it was long ubiquitous. The card catalog was a familiar sight to library users for generations. Computerized cataloguing developed gradually from the mid-20th, and by the late 20th and early 21st, it had mostly replaced card catalogs. The advent of the web brought about ubiquitous use of online public access catalogs (OPACs). Some people still informally refer to the online catalog as a "card catalog".

Bookbinding is the process of building a book, usually in codex format, from an ordered stack of paper sheets with one's hands and tools, or in modern publishing, by a series of automated processes. To bind a book, groups of pages are joined together, often by thread or adhesive but other options exist such as loose-leaf rings, binding posts, twin-loop spine coils, plastic spiral coils, and plastic spine combs. A cover to protect the contents, usually bearing publication information such as title and author, is generally attached; this can be as simple as a single sheet of paper or an elaborate construction of boards covered in cloth, leather, parchment, etc. with many types of decoration. Processes of making books vary significantly by time period and geography/culture. Mechanised bookbinding was introduced in the 19th century with the industrial revolution, alongside machine papermaking, faster methods of leather tanning, and other changes in manufacturing that affected the book.

The trade of bookbinding includes the binding of blank books and printed books. Blank books, or stationery bindings, are books planned to be written in. These include accounting ledgers, guestbooks, logbooks, notebooks, manifold books, day books, diaries, and sketchbooks. Printed books are produced through letterpress printing, offset lithography, or other printing techniques and their binding practices include fine binding, edition binding, publisher's bindings, and library binding.

Papyrus 137 (designated as 𝔓 in the Gregory-Aland numbering system) is the earliest surviving manuscript of the Gospel of Mark. It is a late 2nd or early 3rd century fragment of the first chapter of the Gospel of Mark (verses 7–9 on the recto side and 16–18 on the verso side.) The fragment is from a codex and has been published in the Oxyrhynchus papyrus series as P.Oxy. LXXXIII 5345.