{"title": "The Oregon Trail", "subtitle": "Sketches Of Prairie And Rocky-Mountain Life", "authors": [{"key": "/authors/OL29501A"}], "publish_date": "May 26, 2006", "publishers": ["Kessinger Publishing, LLC"], "weight": "1.6 pounds", "covers": [1851519], "physical_format": "Paperback", "subjects": ["Essays & Travelogues", "United States - Pacific - Oregon", "United States - West - General", "Travel-Essays & Travelogues", "Travel-United States - West - General", "Travel", "Travel - United States"], "languages": [{"key": "/languages/eng"}], "isbn_13": ["9781428610293"], "isbn_10": ["1428610294"], "type": {"key": "/type/edition"}, "physical_dimensions": "9 x 6 x 1.1 inches", "source_records": ["amazon:1428610294"], "key": "/books/OL8540527M", "number_of_pages": 516, "works": [{"key": "/works/OL8166359W"}], "latest_revision": 5, "revision": 5, "created": {"type": "/type/datetime", "value": "2008-04-30T06:33:27.187047"}, "last_modified": {"type": "/type/datetime", "value": "2026-03-29T00:18:44.976291"}}