オクラホマのエマーソン高校で100年前に落書きされたほぼそのままの状態の黒板が発見されました。 Workers discover preserved writings, drawings on slate blackboards at OKC high school | News OK http://newsok.com/workers-discover-preserved-writings-drawings-on-slate-blackboards-at-okc-high-school/article/5425449 Haunting chalkboard drawings, frozen in time for 100 years, discovered in Oklahoma school - The Washington Post http://www.washingtonpost
![100年前の「黒板の落書き」が学校の黒板の下から発見される](https://cdn-ak-scissors.b.st-hatena.com/image/square/cb66bec1d7bea090cd96e15763a68846aa4b40a5/height=288;version=1;width=512/https%3A%2F%2Fi.gzn.jp%2Fimg%2F2015%2F06%2F27%2Fchalkboard-drawings-100-years-ago%2Ftop.jpg)