http://www.imagesonline.bl.uk/britishlibrary/controller/textsearch?width=4&text=William%20Blake&height=5&image.y=17&image=Change%20dimensions&y=0&x=0&image.x=17&start=2&idx=2

One of the manuscripts accessible from the British Library:

http://www.bl.uk/manuscripts/FullDisplay.aspx?ref=Royal_MS_2_a_xvi