He began his career as a reporter for the now-defunct Manila Chronicle, becoming the recipient of a Fullbright grant.

He was then serving the Philippine government as commercial attaché, having previously retired as editor of the Manila Chronicle.

Professor Corpuz served as president of the now defunct The Manila Chronicle from 1994 to 1996.

In 1964, Apostol moved to the Manila Chronicle as editor of its new Sunday supplement Woman and Home.

According to the Manila Chronicle:

As agriculture columnist for The Manila Chronicle in the 1960s, he proposed and got funding for a monthly magazine on farming and gardening.

Jose Balein of the Manila Chronicle interviewed him and in a series of articles from July 3 to 7,.

The Manila Chronicle was a newspaper in the Philippines.

Manila Chronicle shuts down newspaper operations.

The Manila Chronicle, 10 October 1989.