Historical Marker

William Calvert Hallmark

Marker installed: 1936

William Calvert Hallmark, A Veteran of San Jacinto. Born in Tennessee, May 20, 1804. Died January 26, 1880.

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The first oil well in the United States was drilled in Texas in 1859. The discovery of oil transformed the economy of the state and helped to make Texas one of the wealthiest states in the nation.
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