hn-classics/_stories/1981/15767547.md

created_at	title	url	author	points	story_text	comment_text	num_comments	story_id	story_title	story_url	parent_id	created_at_i	_tags	objectID
2017-11-23T20:18:12.000Z	History of Ball Bearings (1981) [pdf]	https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19810009866.pdf	bryanrasmussen	78			12					1511468292	story author_bryanrasmussen story_15767547	15767547

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