{"type": {"key": "/type/work"}, "title": "Illustrated catalogue of oil and artesian well supplies manfactured by the Oil Well Supply Co., Limited, Bradford and Oil City, Penna., U.S.A.", "subjects": ["Catalogs", "Petroleum industry and trade", "Equipment and supplies", "Oil wells", "Artesian wells", "Drilling and boring machinery", "Oil Well Supply Co"], "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL14173525A"}}], "key": "/works/OL45801600W", "latest_revision": 1, "revision": 1, "created": {"type": "/type/datetime", "value": "2026-07-20T23:44:18.731647"}, "last_modified": {"type": "/type/datetime", "value": "2026-07-20T23:44:18.731647"}}