His reign coincides with the peak of the Attalid power and is contemporary with important cultural progress, such as the royal libraries and the Great Altar of Pergamum.
Citation:
Bouchard, Elsa. "Reign of Eumenes II in Pergamum".
The Literary Encyclopedia. First published 01 March 2010
[http://www.litencyc.com/php/stopics.php?rec=true&UID=11361, accessed 22 May 2013.]