https://www.themorgan.org/music
Music Manuscripts Online | The Morgan Library & Museum
Music Manuscripts Online provides access to a selection of more than 700 digitized music manuscripts from the Morgan’s collections, for study and enjoyment....
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https://searcharchives.bl.uk/?f%5Bcollection_area_ssi%5D%5B%5D=Music+Collections
Collection Area: Music Collections - British Library Archives and Manuscripts Catalogue Search...
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