My Citizenship Documents Come From Several U.S. States—How Do I Apostille the Entire File?

It's common for a citizenship-by-descent file to include documents from more than one U.S. state: maybe a grandparent's birth certificate was issued in one state, and a parent's marriage certificate in another. This guide covers only the authentication side: how to organize and coordinate the apostille of documents that come from different states, not the eligibility rules for any citizenship process.
There's no combined process that apostilles documents from multiple states at once. Each document follows the apostille process of the state that issued or recorded it, entirely independently of the other documents in the file, even if they all belong to the same case or the same family. The most efficient way to manage a file like this is to treat each document as its own parallel process, and coordinate tracking all of them together.