Hi-Stat Discussion Paper Series No.220

University, Tokyo. First, I detail what we have accomplished in the gathering of historical data on the Philippines, mainly from US university libraries and archives. Second, I share what I worked on for part of the research on Philippine foreign trade. Third, a brief review is made of research studies on Philippine national income accounts in Philippine economic history. Fourth, I discuss, tentatively, some historical factors that need to be considered for an accurate estimat