without knowing which of the 9000 styles you use, it's rather hard to tell you. Also, is this a mistake in the style and should it be fixed or just something you want?
It's probably not a mistake in style. I am writing a history dissertation and my particular field (within history) has a very unique way of citing archival material that doesn't really match any of the official styles. Everything else follows Chicago Manual of Style (full note). Since I'm using Zotero to cite all my other sources, I'm trying to make it work for archival citations also, but I'm starting to think it might be too complicated.
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Also, is this a mistake in the style and should it be fixed or just something you want?
There will be many instances where I only have the archive and location in archive without other information.