{"covers": [1852508], "last_modified": {"type": "/type/datetime", "value": "2012-11-27T03:50:30.970052"}, "latest_revision": 5, "key": "/works/OL99415W", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL18040A"}}], "created": {"type": "/type/datetime", "value": "2009-10-17T17:55:04.517093"}, "title": "Select letters of Christopher Columbus, with other original documents, relating to his four voyages to the New world", "subject_places": ["America"], "subjects": ["Discovery and exploration", "Spanish"], "type": {"key": "/type/work"}, "revision": 5}