Recordings
British Library World and Traditional Music Collection
"We document, preserve and make accessible one of the world's largest collections of published and unpublished recordings of music from all over the world dating back to as early as the 19th century. The collection represents commercial and ethnographic archival recordings variously described as traditional, folk and ‘world music’." - See more at: http://www.bl.uk/collection-guides/world-and-traditional-music#sthash.JJbXAphN.dpuf
Commercially Available Recording Labels
With a particular focus on source recordings.