“The Joan of Arc Archive is an online collection of information, both general and scholarly, concerning Joan of Arc [Jehanne d’Arc or Darc in medieval French]; including biographies, trial excerpts and commentary, letters and other such documents. English translations and transcriptions of the original languages are provided.”
This site is put together by an historian, Allen Williamson, who is also the Founding Director of the Association for Joan of Arc Studies, which publishes a scholarly journal focused on Joan. Its purpose is to place his works online for the general viewer.
The medieval manuscripts in The Joan of Arc Archive are present in the transcriptions of her letters and from eyewitness accounts of her trial(s), which are accompanied by his translation and commentary.