I have searched for about two years for websites about travel to the phils, attractions, maps, hotel sites, etc since i spend so much time there.
Maps is a real pain, not easy at all to find them, even though i posted that one site before with tons of phils maps, it was a lot of useless maps of clark air force base in the 1950s etc, It is almost impossible, well not exactly , but almost, to find good maps of luzon, that are detailed, clear, showing the provinces, and cities,
Finally i found one, if you like this one i will post more to the different regions of the phils from this same source, its not easy to find on this site, you have to wade through it, another guy had to show me the main url and even then it was hard to find the other ones, anyway let me know if you like this one
http://isis.csuhayward.edu/cesmith/virtmus/Philippines/Islands/LuzonTopo.htm