United States War Dept. Porto Rico Census Office. creator Sanger, Joseph Prentiss 1840-1926 text dcu Washington Govt. Print. Off. 1900 monographic eng 417 p. plates, maps, diagrs. Lt. Col. J. P. Sanger, inspector-general, director. Henry Gannett, Walter F. Willcox, Statistical experts. Published also in Spanish. Puerto Rico Census, 1st, 1899 930420 20160527183804.0 114354