hi tedsmith.

I know a site which has the same purpose.
megu -the admin of the site- uses myAlbum-P and piCal efficiently.

BTW, I think you'd better to install two myAlbum-Ps on your case.

eg)

modules/myalbum/
module name: lost dogs

modules/myalbum0/
module name: found dogs

You can copy and/or move any records from one myAlbum-P to another myAlbum-P using export/import in admin section.

okatti uses such feature efficiently.
It is a knack to make a category for transferring beforehand.