https://archive.org/details/songsandcarolsf00musegoog
Book digitized by Google from the library of the University of California and uploaded to the Internet Archive by user tpb.
british museumsongscarolsmanuscript
https://www.medievalists.net/2012/07/aspects-of-the-anglo-hanseatic-conflict-in-the-fifteenth-century/
The German Hanse, whose rise and decline spanned almost four centuries, was a rather unique institution in late medieval Europe.
fifteenth centuryaspectsanglohanseaticconflict