He also played a major role in a joint project of the Harvard Medical School, the Experiment in International Living, and the U.S. State Department, in Brazil. Beginning in 1976 and for the decade that followed, he was co-investigator and co-director of the Yale–U.S. Agency for International Development Senegal River Integrated Development Project in West Africa. The project addressed the sequelae of the great drought in that region, which, in the 1970s, caused the deaths of over 100,000 people. During that period he was the leader of a Yale–U.S. State Department crisis team, which designed health and rehabilitation measures for the stricken people of Senegal, thousands of whom were displaced, disrupting their village and family life. Herb worked with ministers of health, the World Bank, the World Health Organization, and the United Nations International Children’s Emergency Fund. He subsidized psychosocial research by the Faculties of Medicine of the Universities of Dakar and Abidjan. Most important, he spent much time in the field, working with village leaders and traditional healers, helping them implement a unique mental health component in this vast river project—a unique role for a unique person.