_Northern Ballads._--Is any gentleman in possession of any _old printed_
copies of Danish or Swedish popular ballads, or of any _manuscript
collection_ of similar remains? Are any such known to exist in any
public library in Great Britain? By printed, of course I mean old
fly-sheets, from the sixteenth century downward; they are generally of
four, sometimes of eight, leaves small octavo. Any information, either
personally, or through "N. & Q.," will much oblige