Author: Francisco Miró Quesada Cantuarias, Franklin Pease, David Sobrevilla (eds.), Heraclio Bonilla, Fred Bronner, Leon Campbell, Percy Cayo Córdova, Noble Cook, Jesús Chavarría, José del Busto, Thomas Davies, Armado de Ramón, Félix Denegri Luna, Oliver Dollfus, Luis Durand, Frederic Engel, Waldemar Espinoza, John Fisher, Pedro Grases, Tulio Halperin, Günter Kahle, Manuel Moreyra, Richard Morse, John Murra, Armando Nieto, Franklin Pease, Pilar Pérez, Fernando Ponce, Demetrio Ramos, Rogger Ravines, Raúl Rivera, José Romero, Nicolás Sánchez-Albornoz, Fernando Silva Santisteban, Steve Stein, Hermann Trimborn, Silvio Zavala, Jorge Zevallos Quiñones (auts.)