It only took six weeks before I realized I'll be tripping over numbers if I continue to use two series, one system for the Only a Book pieces with shards from my book, Grace, and one system from the MailArt 365 project.
I've decided that in order to maintain records I'm going to stop the Grace numbering system when I reach 300. It's not only a round number, but it's got that 3 in it, subliminally suggesting the trinity to one and all.
I'll continue to use book pieces and pages for mail art, but they won't be singled out from the rest of my mail art.
This has been a public service announcement.