"Clarifying historical error". by Del Prado, Mariano Goyena

"The importance of history". by Del Prado, Mariano Goyena

"Hibalong : cradle of christianity in Luzon". by Del Prado, Mariano Goyena

"The land [Bicol]. by Del Prado, Mariano Goyena

"The leaning tower of Bombon". by Del Prado, Mariano Goyena

"Legazpi, craddled settlement that grew into a city". by Del Prado, Mariano Goyena

"The Mayon Volcano a poem of grace and majesty". by Del Prado, Mariano Goyena

"The name Daraga". by Del Prado, Mariano Goyena

"Our Bikol martyrs". by Del Prado, Mariano Goyena

"Royal grants". by Del Prado, Mariano Goyena