American Association of Petroleum Geologists (AAPG)
During the 1950s, Walter Karl Link was considered one of the world's best oil exploration geologists, often compared to Wallace Pratt, John E. Brantley, Everette Lee DeGolyer, Lewis MacNaughton and A. I. Levorsen. His renown aroused the interest of a newly created oil company in Brazil, called Petrobras.
Walter Link and the beginning of exploration on Brazil’s continental shelf
Petrobras and 'The Most Famous Geologist in the World'