The 80-year-old concrete arrows that helped deliver the mail | Hacker News

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		The 80-year-old concrete arrows that helped deliver the mail (theverge.com)
		3 points by hepha1979 on Nov 18, 2013 \| hide \| past \| favorite \| 1 comment

ColinWright on Nov 18, 2013 [–]

Discussion: https://news.ycombinator.com/item?id=6453401

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