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{| style="float:right; width:260px; margin:0 0 1em 1em; border:1px solid #aaa; background:#f9f9f9; padding:4px;"
|-
! colspan="2" style="text-align:center; font-size:125%;" | Perseus Digital Library
|-
! Established
| 1987
|-
! Planning Began
| 1985
|-
! Institution
| [[Tufts University]]
|-
! Location
| [[Medford, Massachusetts]], United States
|-
! Editor-in-Chief
| [[Gregory Crane]]
|-
! Type
| Digital humanities research project and digital library
|-
! Principal Collection
| Greek and Roman literature, history, and culture
|-
! Other Collections
| Arabic; Germanic; Renaissance; 19th-century American; historical newspapers
|-
! First Website
| 1995
|-
! Modern Reading Platform
| Scaife Viewer (2018)
|}

The '''Perseus Digital Library''' (also known as the '''Perseus Project''') is a digital humanities research project based at [[Tufts University]] in [[Massachusetts]]. Originally planned in 1985 and established in 1987, the project develops digital collections, research tools, and online resources for the study of the human record. Its principal collection concerns the history, literature, and culture of the [[Greco-Roman world]], although it has expanded to include materials relating to other languages, historical periods, and subjects. The project is directed by classical scholar [[Gregory Crane]], who serves as its Editor-in-Chief.<ref>{{cite web|url=https://beta.perseus.tufts.edu/history/|title=Perseus Version History|publisher=Perseus Digital Library, Tufts University}}</ref><ref>{{cite web|url=https://sites.tufts.edu/digitalhumanities/about/|title=What are the Digital Humanities at Tufts?|publisher=Tufts University}}</ref><ref>{{cite web|url=https://as.tufts.edu/classicalstudies/people/faculty/gregory-crane|title=Gregory Crane|publisher=Department of Classical Studies, Tufts University}}</ref>

The Library provides access to ancient and historical texts, translations, reference works, archaeological and artistic records, and other documentary materials. It also develops digital methods for searching, analyzing, identifying, and comparing texts. Its catalogue distinguishes individual authors and works from particular editions and translations, and employs stable identifiers to facilitate scholarly citation and digital research.<ref>{{cite web|url=https://www.perseus.tufts.edu/hopper/collections|title=Perseus Collections and Texts|publisher=Perseus Digital Library}}</ref><ref>{{cite web|url=https://sites.tufts.edu/perseuscatalog/?page_id=93|title=Catalog Data URIs|publisher=The Perseus Catalog, Tufts University}}</ref>

==History==

===Origins and Establishment===

Planning for the Perseus Project began in 1985. The project was formally established in 1987, with the intention of exploring how digital technology could transform the study and presentation of the humanities. Its original emphasis was the development of a substantial digital collection concerning ancient Greek and Roman literature and culture.

[[Gregory Crane]] was involved in the planning and development of Perseus from its beginnings. He had already undertaken work on computerized retrieval of classical texts while a graduate student at [[Harvard University]], where the Department of Classics acquired Greek text collections on magnetic tape. Crane developed a Unix-based full-text retrieval system for the Thesaurus Linguae Graecae (TLG), and subsequently directed the development of Perseus as Editor-in-Chief.<ref>{{cite web|url=https://as.tufts.edu/classicalstudies/people/faculty/gregory-crane|title=Gregory Crane|publisher=Department of Classical Studies, Tufts University}}</ref><ref>{{cite web|url=https://sites.tufts.edu/digitalhumanities/about/|title=What are the Digital Humanities at Tufts?|publisher=Tufts University}}</ref>

The project established its headquarters at Tufts University in 1992. Its early development included the publication of Perseus 1.0 by [[Yale University Press]] in 1992. The first Perseus World Wide Web site followed in 1995, incorporating the ninth edition of the Greek-English lexicon of [[Henry George Liddell]] and [[Robert Scott]].<ref>{{cite web|url=https://beta.perseus.tufts.edu/history/|title=Perseus Version History|publisher=Perseus Digital Library, Tufts University}}</ref><ref>{{cite web|url=https://sites.tufts.edu/digitalhumanities/about/|title=What are the Digital Humanities at Tufts?|publisher=Tufts University}}</ref>

===Expansion of the Collections===

In 1997, Perseus released its first collection of Latin texts and began work on a Renaissance collection. The project subsequently expanded through the Digital Library Initiative, Phase 2, beginning in 1999. In 2000, the Perseus website was substantially revised as Perseus 3.0, with several new collections added. Perseus 4.0 was released on the World Wide Web in 2005.<ref>{{cite web|url=https://beta.perseus.tufts.edu/history/|title=Perseus Version History|publisher=Perseus Digital Library, Tufts University}}</ref>

In 2006, the project released collections of Greek, Latin, and English texts in [[Text Encoding Initiative|TEI XML]] format. The release made large portions of the project's digital texts available in a structured form suitable for scholarly use and further computational processing. The source code for Perseus 4.0 was released in 2007.<ref>{{cite web|url=https://beta.perseus.tufts.edu/history/|title=Perseus Version History|publisher=Perseus Digital Library, Tufts University}}</ref>

The project has also undertaken research outside classical studies, including collections relating to [[London]], the history of mechanics, and the [[American Civil War]]. Its work has involved digital libraries, text retrieval, morphological analysis, named-entity identification, and the use of electronic resources in historical and literary research.<ref>{{cite web|url=https://as.tufts.edu/classicalstudies/people/faculty/gregory-crane|title=Gregory Crane|publisher=Department of Classical Studies, Tufts University}}</ref>

==Collections==

The Greek and Roman collection remains the Library's principal collection. It contains primary and secondary sources for the study of ancient Greece and Rome, including literary works, historical writings, philosophical texts, and reference materials.

The Library has also developed collections in other fields:

* '''Arabic Materials:''' Documents and texts in the Arabic language.
* '''Germanic Materials:''' Sources relating to the history and literature of Germanic peoples.
* '''19th-Century American:''' Documentary sources concerning the history of the United States during the nineteenth century.
* '''Renaissance Materials:''' Works relating to Renaissance literature, particularly early modern English literature.
* '''Richmond Times Dispatch:''' Historical issues of the American newspaper.
* '''Humanist and Renaissance Italian Poetry in Latin:''' Latin poetry produced in Italy and Italian cultural environments from the period around Dante through the first half of the sixteenth century.

These collections demonstrate the project's development beyond classical philology into a wider digital archive of historical and literary sources.<ref>{{cite web|url=https://www.perseus.tufts.edu/hopper/collections|title=Perseus Collections and Texts|publisher=Perseus Digital Library}}</ref>

===Art and Archaeology===

The Perseus Digital Library includes an Art and Archaeology Artifact Browser, which provides catalogued information and images of ancient objects, sites, and buildings. Its records include coins, vases, sculptures, gems, archaeological sites, and buildings. The catalogue descriptions and images have been produced in collaboration with museums, institutions, and individual scholars, while descriptive information and keywords are drawn from cited standard sources.<ref>{{cite web|url=https://www.perseus.tufts.edu/hopper/collections|title=Perseus Collections and Texts|publisher=Perseus Digital Library}}</ref>

==Digital Texts and Research Tools==

A central feature of Perseus is the presentation of texts in digital form. The Library provides searchable collections of original-language works and translations, often with links to dictionaries, grammatical information, and other reference material.

One of the project's important technical developments has been its morphological analysis system. This allows words in Greek and Latin texts to be associated with grammatical information and lexical resources. It supports the identification of word forms and provides links between texts and dictionary entries. Gregory Crane's work on this system has been an important part of the development of the Perseus database.<ref>{{cite web|url=https://as.tufts.edu/classicalstudies/people/faculty/gregory-crane|title=Gregory Crane|publisher=Department of Classical Studies, Tufts University}}</ref>

===The Perseus Catalog===

The Perseus Catalog provides bibliographical records for authors, works, editions, and translations. It is important to distinguish between an ancient work and the particular printed or digital edition through which that work is presented.

For example, a record for an ancient author may identify an individual work, while separate records identify the Greek or Latin edition and its translations. The records can contain details such as the editor, translator, publisher, publication location, date, language, and the volume in which the work appeared.<ref>{{cite web|url=https://sites.tufts.edu/perseuscatalog/?page_id=115|title=Definitions of Terms|publisher=The Perseus Catalog, Tufts University}}</ref>

===Canonical Text Services and Stable Identifiers===

Perseus uses the Canonical Text Services (CTS) system to identify individual texts and passages. CTS employs Uniform Resource Names (URNs) to distinguish authors, works, editions, translations, and specific passages. These identifiers allow a text to be referred to consistently even when the location or presentation of the digital file changes.<ref>{{cite web|url=https://sites.tufts.edu/perseuscatalog/?page_id=93|title=Catalog Data URIs|publisher=The Perseus Catalog, Tufts University}}</ref><ref>{{cite web|url=https://sites.tufts.edu/perseuscatalog/?page_id=115|title=Definitions of Terms|publisher=The Perseus Catalog, Tufts University}}</ref>

The identifier for Plutarch's ''Romulus'', for example, is:

<pre>
urn:cts:greekLit:tlg0007.tlg002
</pre>

A further identifier distinguishes a particular edition of the Greek text or an English translation. The Perseus Catalog uses these identifiers to connect the work with its individual textual versions and bibliographical records.<ref>{{cite web|url=https://sites.tufts.edu/perseusupdates/beta-features/perseus-stable-uris/|title=Perseus Stable URIs|publisher=Perseus Digital Library Updates}}</ref>

==Textual Status and Reliability==

The Perseus Digital Library contains texts produced and maintained through different processes. It is therefore important to distinguish a prepared digital edition from a provisional text generated by optical character recognition (OCR).

The current Beta Perseus documentation identifies texts marked '''Perseus''' or '''First1KGreek''' as editions and translations prepared and corrected by the Perseus Digital Library and the First Thousand Years of Greek project. These are recommended starting points when choosing between different versions of a work.

The documentation separately identifies '''Experimental''' texts as provisional editions generated from uncorrected OCR. Such texts have not been proofread and may contain misread characters, missing or garbled words, and imperfect citation structures. Perseus advises readers to prefer a curated edition where one is available.<ref>{{cite web|url=https://beta.perseus.tufts.edu/help/|title=Help: Perseus and First1KGreek Texts; Experimental Texts|publisher=Perseus Digital Library, Tufts University}}</ref>

The project's canonical Greek literature repository also describes its contents as a work in progress and warns that not all headers have been checked for accuracy and that changes may be made to the files and data. Consequently, the presence of a text in the Perseus collection should not automatically be treated as proof that every digital transcription, heading, or bibliographical field has been independently verified.<ref>{{cite web|url=https://github.com/PerseusDL/canonical-greekLit|title=Canonical Greek Literature Repository|publisher=Perseus Digital Library, Tufts University}}</ref>

==Copyright and Licensing==

The copyright status of Perseus materials must be considered at the level of the particular work or digital component being used. The ancient literary works in the Library, later printed editions, modern translations, editorial contributions, digital transcriptions, XML encoding, metadata, images, and software are not necessarily subject to identical copyright conditions.

The Perseus version history records that the project's Greek, Latin, and English TEI XML collections released in 2006 were distributed under a Creative Commons ShareAlike, Non-Commercial, and Attribution licence.<ref>{{cite web|url=https://beta.perseus.tufts.edu/history/|title=Perseus Version History|publisher=Perseus Digital Library, Tufts University}}</ref>

The current ''canonical-greekLit'' repository on GitHub states that, unless otherwise indicated, its repository contents are licensed under Creative Commons Attribution-ShareAlike 4.0 International. The same repository expressly notes that materials within the Perseus Digital Library have varying copyright status and that the status of a particular component or object may require separate examination.<ref>{{cite web|url=https://github.com/PerseusDL/canonical-greekLit|title=Canonical Greek Literature Repository and Licence Information|publisher=Perseus Digital Library, Tufts University}}</ref>

A repository-wide licence notice should therefore not be confused with a determination that every underlying ancient work or historical printed edition is itself copyrighted or newly licensed by the digital project. In assessing a particular transcription, it is necessary to distinguish the original literary work from any independently protected translation, editorial apparatus, digital encoding, or other material actually reproduced.

==Plutarch's Life of Romulus==

The Perseus Digital Library has been an important source for the Original Source Project's presentation of [[Plutarch]]'s ''Life of Romulus''. Its catalogue provides bibliographical information connecting the digital text with the printed edition of ''Plutarch's Lives'', Volume I.

The catalogue record for the Greek text identifies:

* '''Author:''' [[Plutarch]]
* '''Work:''' ''Romulus''
* '''Editor:''' [[Bernadotte Perrin]]
* '''Translator:''' Bernadotte Perrin
* '''Host Volume:''' ''Plutarch's Lives, Volume I''
* '''Publication Date:''' 1914
* '''Publishers:''' [[Harvard University Press]] and [[William Heinemann]]
* '''Languages:''' Ancient Greek and English

The catalogue records the Greek and English texts as appearing on opposite pages. Its earlier record identifies the 1914 volume as a reprint and includes a modification date of 1982. The newer Scaife ATLAS record identifies the Greek edition and English translation separately, retaining Perrin's attribution as editor of the Greek text and translator of the English text.<ref>{{cite web|url=https://catalog.perseus.org/catalog/urn:cts:greekLit:tlg0007.tlg002.perseus-grc1|title=Romulus, Plutarch's Lives, Volume I: Greek Edition|publisher=Perseus Digital Library}}</ref><ref>{{cite web|url=https://catalog.perseus.org/catalog/urn:cts:greekLit:tlg0007.tlg002.perseus-eng1|title=Romulus, Plutarch's Lives, Volume I: English Translation|publisher=Perseus Digital Library}}</ref><ref>{{cite web|url=https://atlas.perseus.tufts.edu/library/urn:cts:greekLit:tlg0007.tlg002/|title=Romulus: Scaife ATLAS Catalogue Record|publisher=Perseus Digital Library}}</ref>

This record is significant because it establishes the connection between the digital Greek text, Perrin's editorial responsibility, and the bibliographical details of the printed volume. The catalogue is a useful source for identifying the edition and its metadata; questions concerning individual readings should still be assessed against the relevant printed text.

==Scaife Viewer and Recent Development==

The Scaife Viewer was released in 2018 as a digital reading environment for pre-modern texts in their original languages and in translation. It developed as part of the wider Open Greek and Latin initiative and the continuing work of the Perseus Digital Library.<ref>{{cite web|url=https://beta.perseus.tufts.edu/history/|title=Perseus Version History|publisher=Perseus Digital Library, Tufts University}}</ref>

The project released a beta version of ''Beyond Translation'' in 2023. In 2026, it announced a new Beta Perseus reading environment. These developments continue the Library's original objective of exploring the possibilities of digital collections and new methods of scholarly access to historical texts.<ref>{{cite web|url=https://beta.perseus.tufts.edu/history/|title=Perseus Version History|publisher=Perseus Digital Library, Tufts University}}</ref>

==See also==

* [[Bernadotte Perrin]]
* [[Plutarch]]
* [[Loeb Classical Library]]
* [[Harvard University Press]]
* [[Digital humanities]]
* [[Classical philology]]
* [[Text Encoding Initiative]]

==References==

<references />

==External links==

* [https://www.perseus.tufts.edu/ Perseus Digital Library]
* [https://beta.perseus.tufts.edu/ Beta Perseus]
* [https://catalog.perseus.org/ Perseus Catalog]
* [https://atlas.perseus.tufts.edu/ Scaife ATLAS]
* [https://github.com/PerseusDL/ Perseus Digital Library repositories on GitHub]
* [https://as.tufts.edu/classicalstudies/people/faculty/gregory-crane Gregory Crane, Tufts University]

[[Category:Digital libraries]]
[[Category:Digital humanities]]
[[Category:Tufts University]]
[[Category:Classical studies]]
[[Category:Greek literature]]
[[Category:Latin literature]]

Perseus Digital Library - Revision history

AnthonyPvanDuyn: Page Creation