{"created": {"type": "/type/datetime", "value": "2019-02-07T19:22:46.597365"}, "subject_places": ["United States"], "subjects": ["Railroads", "Economic conditions", "History"], "latest_revision": 1, "key": "/works/OL18507814W", "title": "American railroads and the transformation of the ante-bellum economy", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL728540A"}}], "type": {"key": "/type/work"}, "last_modified": {"type": "/type/datetime", "value": "2019-02-07T19:22:46.597365"}, "revision": 1}