{"last_modified": {"type": "/type/datetime", "value": "2012-05-02T19:14:14.935071"}, "title": "Navigation of Delaware River. Letter from the Secretary of the Treasury, relative to the navigation of the Delaware River", "created": {"type": "/type/datetime", "value": "2009-12-11T03:54:33.039096"}, "subjects": ["Navigation"], "latest_revision": 4, "key": "/works/OL11035975W", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL4521280A"}}], "type": {"key": "/type/work"}, "revision": 4}