The Digital Archive allows contributing organizations to use a Common Vocabulary for subjects, types, and places. More information on this topic is coming. Click the links below to see the complete vocabulary hierarchies.
Note that most of of the items from the initial group of eight contributors use metadata produced by HistoryIT. AvantLogic converted all Type fields to use the Common Vocabulary, and a few of the Subject fields, but most subject terms are the one or two keywords that HistoryIT chose. Each of the eight organizations will need to go through their items one by one to set proper subjects. Instructions for how to do this will be coming.