Kan si Simeon Paz nagsurat kan taon 1915 (Ethnography of the Bikol People)  dapit kan mga bikolnon, naonabihan niya an imprentahan ni Mariano Perfecto. Sabi niya, "There is one library in the whole region known as Libreria de Mariano Perfecto. This library contains more or less 400 or 500 volumes, all written in the Bicol dialect. It is at Naga, Camarines. There are dramas, novels, folklore, awit, myths, the Passion, etc. These are sold at very low price...."