Collier's New Encyclopedia — Texas (1921)
“ There are numerous mineral springs and oil wells. In the latter part of 1900 extensive oil fields were discovered near Beaumont, and produced a great boom in the Texas oil industry. The mineral production is of great importance. Its value has been increased in recent years by the enormous development of the petroleum fields. This was especially notable in 1918, 1919 and 1920. The production in 1918 was 38,750,031 barrels valued at $74,867,537. The production of coal is of great importance. ”
