"Letters from Brazil IV" is the most recent in the series of Professor Mike Gaherty's travel and research in Brazil. He has returned in 1984 after an "invited" hiatus since 1971 by the General heading Brazil's Pre-Censorship Board, this due to Mike's friendship, research, collaboration with, and defense of singer-composer Chico Buarque de Hollanda. He is reporting on current events and politics for the International Section of the "New York Times,"...