Grupo Sanborns Mexico City tourist attraction and national monument. This is probably the world's only pharmacy decorated with a mural by José Clemente Orozco. In 1946, Frank Sanborn sold his interest in Sanborns to fellow pharmacist Charles Walgreen Jr. of Chicago. Like Walgreens, Sanborns does not use an apostrophe in its name. In Sanborns' case, it is due to the Spanish language not using apostrophes to indicate possession. Walgreens sold its interest in 1985. Currently, Sanborns is a unit of conglomerate Grupo Carso which itself is controlled by Carlos Slim, the fourth wealthiest billionaire in the world as of 2016. Sanborns controls
Carlos Slim in copper and aluminum products, along with a chemicals business, Química Fluor, and others. Slim made a large fortune in the early 1990s when Mexico privatized its telecom industry and Grupo Carso acquired Telmex from the Mexican government. In 1990 the Grupo Carso was floated as a public company initially in Mexico and then worldwide. Grupo Carso also acquired majority ownership of Porcelanite, a tile making company in 1990. This investment was assigned to an associated company, but in 1995 Grupo Carso began growing its equity stake to 83 percent and subsequently made it a subsidiary. Later in 1990, Slim