Najeeb M. Saleeby, The History of Sulu
“ For this reason, Sulu, which contains a population of pirates and slaves, is nothing more than a shipping point where certain products are collected from the other islands of the south. It is surrounded by islands and islets, which form the archipelago bearing its name, and has a length from east to west of about ten leagues, a width of four and a half, and a circumference of thirty-two. The total population credited to the Archipelago is from 149,000 to 150,000 souls, 6,800 of which inhabit Jolo, and in this number are included 800 Chinese. ”
