スミソニアン博物館のインスタグラム(smithsonian) - 5月21日 05時47分

How we roll on #biketoworkday: A Copeland steam-propelled tricycle
In this photo from 1888, Lucius D. Copeland gives a demonstration of his invention in front of our Castle Building. The 4 horsepower steam engine was capable of powering the bike at up to 15 miles per hour.

[BIHAKUEN]UVシールド(UVShield) 更年期に悩んだら

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