Did You See the 100 Year Old Chalkboards in Oklahoma School

I missed this somehow. I thought I'd share in case you did. When workers in an Oklahoma school were removing chalk boards to replace them with white boards they made an awesome discovery.

According a Washington Post article on June 6th and  tweets from Oklahoma City Public Schools, the workers uncoverd chalkboards with drawings thought to be at least 100 years old! How cool is this?