{"identifiers": {"goodreads": ["2902789"], "librarything": ["177534"]}, "title": "The Oregon Trail", "subtitle": "Francis Parkman's Famous History of the 1846 Expedition", "publish_date": "September 1996", "publishers": ["The Audio Partners"], "weight": "7.7 ounces", "physical_format": "Audio cassette", "contributions": ["Frank Muller (Narrator)"], "subjects": ["United States - 19th Century/Old West", "History / Americas (North, Central, South, West Indies)", "Audio Adult: Books On Tape", "Unabridged Audio - History", "Abridged Audio - Misc. Nonfiction"], "languages": [{"key": "/languages/eng"}], "isbn_13": ["9781572700246"], "isbn_10": ["1572700246"], "type": {"key": "/type/edition"}, "physical_dimensions": "7.1 x 4.2 x 1.2 inches", "source_records": ["amazon:1572700246"], "key": "/books/OL9388163M", "works": [{"key": "/works/OL8166359W"}], "latest_revision": 7, "revision": 7, "created": {"type": "/type/datetime", "value": "2008-04-30T09:38:13.731961"}, "last_modified": {"type": "/type/datetime", "value": "2025-12-03T03:40:19.349007"}}