A gigantic map of all the cool plaques in the world. A project of 99% Invisible.

CALCIUM CARBIDE

Industrial experiment nearby in 1892 led to discovery of process for its manufacture. First produced commercially by James T. Morehead.Plaque via North Carolina Highway Historical Marker Program,...

Industrial experiment nearby in 1892 led to discovery of process for its manufacture. First produced commercially by James T. Morehead.

Plaque via North Carolina Highway Historical Marker Program, and is used with their permission. Full page here (NC Marker ID J82)

Nearby Plaques On Google Maps