Everette Lee DeGolyer wore many hats-and he wore them with distinction. Though not a geophysicist, he helped make geophysics central to oil exploration. Though not a politician, he played an important role in the national politics of energy. Though trained as a geologist, he became an important business executive. DeGolyer left his stamp on oil exploration and his name on a number of philanthropic institutions, including the DeGolyer Library at Southern Methodist University. This account of DeGolyer's life, at once readable and yet authoritative, covers the period from his training with the Uni