This a good source for the BWV 1031:
http://www.breitkopf.com/featureDetail. ... &feaId=221
There is also the Neue-Bach-Ausgabe which should have everything in it. A music library should have it.
I've been searching for the Telemann myself, I haven't found out yet where the movements are from originally. There is a Telemann-Ausgabe published by Bärenreiter, but it's not complete.
Of course, urtext and everything is fine, but then there are libraries full of books about the interpretation of baroque music......
