{"first_publish_date": "1962", "last_modified": {"type": "/type/datetime", "value": "2020-09-28T13:51:29.306166"}, "title": "Lectures on the historical geography of the United States as given in 1933", "created": {"type": "/type/datetime", "value": "2009-12-09T21:51:37.250085"}, "covers": [9533636], "subject_places": ["United States"], "lc_classifications": ["H31 .C514 no. 77"], "latest_revision": 3, "key": "/works/OL1556838W", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL165975A"}}], "dewey_number": ["911.73"], "type": {"key": "/type/work"}, "subjects": ["Historical geography", "Territorial expansion"], "revision": 3}