The History of Middle-earth in the context of "Legendarium"

In the fantasy of J. R. R. Tolkien, the Dwarves are a race inhabiting Middle-earth, the central continent of Arda in an imagined mythological past. They are based on the dwarfs of Germanic myths who were small humanoids that lived in mountains, practising mining, metallurgy, blacksmithing and jewellery. Tolkien described them as tough, warlike, and lovers of stone and craftsmanship.

The origins of Tolkien's Dwarves can be traced to Norse mythology; Tolkien also mentioned a connection with Jewish history and language.Dwarves appear in his books The Hobbit (1937), The Lord of the Rings (1954–55), and the posthumously published The Silmarillion (1977), Unfinished Tales (1980), and The History of Middle-earth series (1983–96), the last three edited by his son Christopher Tolkien.

Tolkien's legendarium is the body of J. R. R. Tolkien's mythopoeic writing, unpublished in his lifetime, that forms the background to his The Lord of the Rings, and which his son Christopher summarized in his compilation of The Silmarillion and documented in his 12-volume series The History of Middle-earth. The legendarium's origins reach back to 1914, when Tolkien began writing poems and story sketches, drawing maps, and inventing languages and names as a private project to create a mythology for England. The earliest story, "The Voyage of Earendel, the Evening Star", is from 1914; he revised and rewrote the legendarium stories for most of his adult life.

The Hobbit (1937), Tolkien's first published novel, was not originally part of the larger mythology but became linked to it. Both The Hobbit and The Lord of the Rings (1954 and 1955) are set in the Third Age of Middle-earth, while virtually all of his earlier writing had been set in the first two ages of the world. The Lord of the Rings occasionally alludes to figures and events from the legendarium to create an impression of depth, but such ancient tales are depicted as being remembered by few until the story makes them relevant.

The English philologist and author J. R. R. Tolkien created several constructed languages, mostly related to his fictional world of Middle-earth. Inventing languages, something that he called glossopoeia (paralleling his idea of mythopoeia or myth-making), was a lifelong occupation for Tolkien, starting in his teens.

Tolkien's glossopoeia has two temporal dimensions: the internal (fictional) timeline of events in Middle-earth described in The Silmarillion and other writings, and the external timeline of Tolkien's own life during which he often revised and refined his languages and their fictional history. Tolkien scholars have published a substantial volume of Tolkien's linguistic material in the History of Middle-earth books, and the Vinyar Tengwar and Parma Eldalamberon journals. Scholars such as Carl F. Hostetter, David Salo and Elizabeth Solopova have published grammars and studies of the languages.

Unfinished Tales of Númenor and Middle-earth is a collection of stories and essays by J. R. R. Tolkien that were never completed during his lifetime, but were edited by his son Christopher Tolkien and published in 1980. Many of the tales within are retold in The Silmarillion, albeit in modified forms; the work also contains a summary of the events of The Lord of the Rings told from a less personal perspective.

The collection received a cautious welcome from scholars and critics. They noted Christopher Tolkien's warning that a good knowledge of the background was needed to gain much from the stories. Others noted that the stories were among the best of Tolkien's writing; Warren Dunn expressed a wish for the whole of the history in such a format. The book, with its commentary, was commercially successful, indicating a market for more of Tolkien's work and leading to the 12-volume The History of Middle-earth.