Thanks for the reply.
I saw a page of documentation for DBIx::Dump that showed a "Title" parameter. I cannot find that page again.
It would be nice if I could just add 'title' => "July 2015" and be done with it, but I can't.
So I believe that I will have to read the spreadsheet, modify it, and write it back out. Seems like overkill just to add a worksheet title.
Thanks again.