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 to a running joke in the Mexican business scene where "there was nothing left to acquire in Mexico". He eyed towards investing the United States where he set up Telmex USA and also acquired a stake in Tracfone, a US cellular telephone company. At the same time, he established Carso Infraestructura y Construcción, S. A. (CICSA) as a construction and engineering company within Grupo Carso. During the same year, Slim had heart surgery and subsequently passed on much of the day-to-day involvement in the businesses to his children and their spouses. América Telecom, the holding company for América Móvil, was