Mexico City: Patronato del Instituto Nacional de Estudios Históricos de la Revolución Mexicana, 1963. Pamphlet. 72p., 6.75x9 inches, text in Spanish, illustrated with b&w photos, booklet in stapled tan wraps. Spinefold is splitting roughly and covers are held by a single staple, paperstock is very toned and verging on fragile. As is. Biblioteca del Instituto Nacional de Estudios Historicos de la Revolucion Mexicana no. 28.