{"languages": [{"key": "/l/eng"}], "physical_format": "Hardcover", "weight": "2.8 pounds", "publishers": ["Colorado Railroad Museum"], "number_of_pages": 208, "last_modified": {"type": "/type/datetime", "value": "2008-04-30 09:38:13.731961"}, "id": 12817407, "isbn_13": ["9780918654472"], "isbn_10": ["0918654475"], "publish_date": "December 1992", "key": "/b/OL9519992M", "authors": [{"key": "/a/OL2937897A"}], "title": "William Henry Jackson's Colorado", "type": {"key": "/type/edition"}, "subjects": ["United States - State & Local - General", "History - U.S."], "physical_dimensions": "12 x 9.8 x 0.8 inches", "revision": 1}