On this Day in History

On this Day in History in 1882: Wood block alarm invented, when alarm rang, it dropped 20 wood blocks.
 
On this Day in History in 1790: Revenue Marine Service (US Coast Guard) created.
 
On this Day in History in 1910: The highest mountain in North America, Alaska’s Mt McKinley climbed.

On this Day in History

On this Day in History in 1913: 1st verifiable ascent of main summit of Denali (Mt McKinley), North America’s highest mountain led by Hudson Stuck and Harry Karstens.