found: Data from Great Plains National Instructional Television Library for Checking it out. 118 [VR] 1983 (a.e.)(Ruben Blades; musician)
found: Marton, B.A. Rubén Blades, c1992:CIP t.p. (Rubén Blades) data sheet (Panamanian lawyer and entertainer--singer, songwriter, and actor)
found: The New Grove dictionary of American music(Blades, Rubén (b. Panamá, Panama, 16 July 48). Popular singer and songwriter)
found: Africana: The Encyclopedia of the African and African American Experience, Second Edition, accessed December 17, 2014, via Oxford African American Studies Center database:(Blades, Rubén; Panamanian singer, songwriter, and actor who played a key role in the rise of salsa music; born 16 July 1948 in Panama City, Panama; completed a degree in law in Panama (1974); received a Master of Law degree from Harvard University; gained recognition while singing with Willie Colón and the Fania All-Stars (1976-1981),first American recording, De Panama a Nuevo York (1970); ran unsuccessfully for president of Panama (1994); made Broadway debut in Paul Simon's musical The Capeman (1998); appeared in Hollywood films, last released album Mundo (2002))