LEAR meeting, Mexico, 1937. From L to R, front row: José Mancisidor, second; Silvestre Revueltas, fourth; Hernán Laborde, sixth; Juan Marinello, eighth; Nicolás Guillén, ninth; Martín Luis Guzmán, tenth. Front row seated: Clara Porset, first; Fernando Gamboa, ninth. Photographs - Professional and political groups [Photographic archive. Group photographs]