Many of the online collections below contain digitized images of scores in manuscript (MS) format. Please view the Manuscript Scores tab in the menu above for more information about finding items in this specific format.
Digital Image Archive of Medieval Music (University of Oxford and Royal Holloway, University of London)
A portal to worldwide collections of medieval polyphonic music manuscripts dating from about 800 to 1550, not including plainchant. Includes detailed information for all the known sources of European polyphonic music and high-quality color images of some manuscripts.