In dulci jubilo

The original is a copy of a copy of a copy - with the composer's name hand-written. 
I cannot find another copy of a SATB In Dulci by Scheidt. Grove Dictionary of Music lists one by Scheidt
for double choir. One of the composers who has written an SATB versdion is Schein, Johann Hermann (1586-1630). I have not found an edition of this in print to be able to check it.
Adapted for SATB recorders by DSH