Thanks to all that responded! The short of it was
that I did need to upgrade and reposition the \header block in order to make the
titles appear. Perhaps by the copyright being outside and before the \score
block the program knows what it is "just in time" when I needed it.
The long of it was interesting, actually: when I
moved the title information outside and before the \score block, I forgot to
take out the printallheaders = ##t declaration. The output had two sets of title
headers! Due to your comments I understood why this is so.
Once again, thanks for responding, and I promise
to seriously reconsider my reticence in upgrading to the development
version this time. ^_^