Gregorio F. Zaide, the author of countless school textbooks and a member of the very dissertation panel that examined Scott's thesis in 1968 remained silent but he continued to endorse the myth and even add his own details to it in books such as Heroes of Philippine History (1970), Pageant of Philippine History (1979), History of the Republic of the Philippines (1983), Philippine History (1984), and in reissues of his older works. Soon after Dr. Zaide's death in 1986 his daughter, Sonia M. Zaide, revised the books that she had co-authored with her father and removed most, but not all, of the material based on the Marco hoaxes.