We've completed a step-by-step walkthrough of converting an EAD2002 document into EAD3, provided here:  Many thanks to the SAA EAD Roundtable for hosting this resource and providing support.

We chose GitHub to host the walkthrough as it provides for line-by-line comparisons at each step of the transformation process (ref.  This allows for us to provide discussion on each change (e.g. <unitdate> to <unitdatestructured>) while highlighting the precise changes made.

The full document history can be found here -  Each link on that page will open a line-by-line comparison of EAD2002 vs. EAD3, and a discussion of what and why changes happened.


Alexander Duryee
Metadata Archivist
New York Public Library