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The Nuttall Encyclopedia
The name of three kings of Pergamos:
ounded the library of Pergamos and joined the Romans against Philip and the Achæans (241-197 B.C.);
ept up the league with Rome (157-137);
equeathed his wealth to the Roman people (137-132).
Wood, James, ed. Entry for 'At`talus'. The Nuttall Encyclopedia. https://www.studylight.org/encyclopedias/eng/nut/a/attalus.html. Frederick Warne & Co Ltd. London. 1900.