Philippines: Sources

• Gaceta de Manila. "Gaceta de Manila" (web site: 1861-1888)
• Official Gazette. "Official Gazette" (No. 1, 10 Sep 1902) (web site: 1902-1905, 1907-1923, 1925-1941, 1942, 1943, 1946, 1948-1968, 1970-2004, 2007-2011; index 1913-1928)