The problem with Arthurian web resources is not that there are too few but that there are too many. Be careful out there. Any twelve-year-old with a good computer and some free time can make a very attractive web site about Arthurian Lit. Find out who is responsible for the site you're looking at and determine whether that person or group is reliable.
Metasites (alphabetical order)
By Tom Green at Exeter College, Oxford. Scroll down his Arthurian links page to reach some useful bibliographies.
Web site of the eponymous (look it up) journal. This site has bibliographies and other pedagogical resources.
Useful stuff, collected together by a reliable source (Judy Shoaf at the University of Florida). You might be interested in subscribing to Arthurnet, an scholarly email discussion list about all things Arthur. Please check out the FAQ about student research before asking a silly question that will only embarrass us all, OK?
From the home page: "THE CAMELOT PROJECT is designed to make available in electronic format a database of Arthurian texts, images, bibliographies, and basic information. The project, begun in 1995, is sponsored by the University of Rochester and prepared in The Robbins Library, a branch of Rush Rhees Library." You can also access the TEAMS Middle English texts through this site (thanks to the NEH).
Canterbury Tales: The Wife of Bath's Tale
This site is so amazing that I must include it, even though we are only spending two days on Chaucer. It's part of the Electronic Canterbury Tales, a site by Daniel Kline at the University of Alaska-Anchorage.
The Luminarium's Anthology
of Middle English Literature
Anniina Jokinen's site includes some useful resources for the study of Sir Gawain and the Green Knight and Chaucer. Just so you know, however, I have mixed feelings about recommending the site. The editor has worked very hard to create a beautiful and useful site. But she has chosen to prevent people from borrowing her images--images she herself has scanned in or borrowed from elsewhere, not original artwork. Although she presents her site as scholarly, this is not an academic way of looking at information, and it undercuts her credibility. Plus, the music is very annoying. Use with these caveats.
The Labyrinth's Arthurian
A somewhat outdated collection of links from the Labyrinth, source for all things medieval. They are in the midst of a major overhaul, so try their search engine as well as the resources page.
Medieval texts in their original languages (order of the syllabus)
Go look at Culhwch ac Olwen--go on, I dare you! I wish I had this site when I was learning Middle Welsh.
The Charrette Project
From the home page: "The Charrette project is a complex, scholarly, multi-media electronic archive containing a medieval manuscript tradition--that of Chrétien de Troyes's Le Chevalier de la Charrette (Lancelot, ca. 1180). It is developed and maintained by the Department of Romance Languages, Princeton University." The site includes wonderful images of manuscripts of Le Chevalier de la Charrette (which we will read this term) and has an introduction to Chrétien and to the text. It's a bit much for our purposes (an undergraduate class, reading the poem in a Modern English translation), but it gives you an idea of what's out there.
Sir Gawain and the Green Knight
The Wife of Bath's Prologue and Tale
Arthurian Lit home