The folks over at wappenwiki have finished and uploaded another set of redrawn coats of arms, this time from the Historia Anglorum by Mathew Paris.
As an example, here is Richard de Cornwall, Earl of Cornwall:
You can click on each coat of arms to see a larger image, and then there's a link from that image's page to the even larger original .svg file.
You might want to click on over there and take a look to see! The link is: http://wappenwiki.org/index.php/Historia_Anglorum