{"title": "Up-to-date air-brake catechism", "covers": [6108184, 6120414, 6884234, 6809464, 6814180, 6830322, 6855973, 6856826], "first_publish_date": "1907", "key": "/works/OL216377W", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL2437642A"}}], "subjects": ["Westinghouse air-brake", "Westinghouse air-brake. [from old catalog]", "Westinghouse air brake. [from old catalog]"], "type": {"key": "/type/work"}, "lc_classifications": ["TF425 .B69"], "latest_revision": 5, "revision": 5, "created": {"type": "/type/datetime", "value": "2009-10-22T12:00:31.955990"}, "last_modified": {"type": "/type/datetime", "value": "2026-06-10T20:14:40.853620"}}