Working two semesters on several exegesis papers. First document created in
Oct 2005. Copied bibliography from most recent doc each time started a new
paper for a starting point. Lots of saves and backup files. A couple of
weeks ago began new paper with most current biblio. Saved many times. Added
new content as recently as 3 days ago. Noticed yesterday the bibliography
(only) was missing from most recent document and its backup, and from the
last most recent document and its backup. Today I discovered the biblio also
is missing from the original document and its backup, and every intermediate
document. What could have happened?