The databases and websites listed on this page are good sources for primary sources from the Middle Ages. Make sure also to consult the next tab on primary sources in books.
At right: Portrait of 13th century landowner, circa 1240, from the UK National Archives via Flickr.
These digital libraries and websites contain excellent collections of digitized and scribed materials.
At right: a page from a 13th century Abbreviatio (abridgement) of Domesday Book, from the UK National Archives via Flickr.