That’s a difficult one, yes it is an archive of recordings going way back, some no longer available anywhere else, but I was given to understand they are mostly vinyl rips and so aren’t always the best quality and certainly aren’t the original label (or derivatives of that original label)?
Still, if Roon ever get their streaming service label search going then we could find BNF versions very easily… Search by record label outside library 
They never seem to quite get what we want do they, Roon or Qobuz. I mean Qobuz has an excellent label search feature (only on Mac though it seems, not on iOS), but once you have a lovely list of all the albums from that label there is no search or filter you can apply to find the album or artist you are looking for? Oh well!