It does a bit, but on a positive note the documentation does still exist and they had a few engines to work from, including one perfectly preserved example. NAS

It does a bit, but on a positive note the documentation does still exist and they had a few engines to work from, including one perfectly preserved example. NASA has done well. Long term, I'd hope and expect the Library of Congress to take over the storage and maintenance of documentation and artefacts relating to major public engineering works, so people can at least go back to the source to re-learn the lessons of the past.