Reading About the Philippines--Still Looking

I have checked Amazon.  They have a couple of standard travel books about the Philippines and several books about World War II in the Philippines.  We are looking for nonfiction, non-military.  History that emphasizes cultural and social aspects would be great.  I have also looked at current offerings on the U of the Philippines Press list.  A few come close but don't quite make the final cut.  Right now I am in Washington, D.C. and will hit some of the independent bookstores to see what is available.  There has to be something out there other than Nick Joaquin's "Manila, My Manila."  Any help welcome.  Maybe when summer vacation in the Philippines ends at the beginning of June?