{"subject_places": ["Illinois and Michigan Canal (Ill.)"], "key": "/works/OL6366754W", "title": "The necessity of a ship-canal between the East and the West", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL1670668A"}}], "type": {"key": "/type/work"}, "covers": [5870706], "subjects": ["Canals", "Congresses", "Inland navigation"], "latest_revision": 4, "revision": 4, "created": {"type": "/type/datetime", "value": "2009-12-10T19:02:15.590528"}, "last_modified": {"type": "/type/datetime", "value": "2026-05-22T02:57:02.349513"}}