I've added a new field for Collections (Artist Series, Angling Collection, SI, etc...) and moved a lot of the current data out of the Signature, OPD, or Notes fields, as many didn't really belong there, but I wanted to still track them. Being in their own field, they can be linked and listed.
It can be browsed by the main Database listing, or from the colorway detail page.
http://www.o-review.com/database.asp?table_name=glasses&family=Collections