BOLETIN DEL ARCHIVO GENERAL DE LA NACION; NOS. 26, 27, 28/29. (TERCERA SERIE, TOMO I, NOS. 1, 2, 3/4).
México: no publisher, 1984. Paperback. 4 numbers in 3, vp, photos, illus., facsimiles, tables, wrps, 4to. Numbers 26 and 27 consist of reprints from the "Gazetas de México," first printed in the 1790s. 28/29 has data on the first minimun wage with documents from 1912-13. More