Thomas Edward Gibbon, Mexico under Carranza (1919)
“ Under the national laws formerly in force, "solid mineral fuels; petroleum and all hydrocarbons solid, — liquid or gaseous" were the property of the owners of the lands in which they existed. Under this law the title to the petroleum deposits as well as to coal mines, was acquired by foreigners who invested their money in the development of these great natural resources which had been neglected for four hundred years by the Latin masters of the country. ”
