▁He ▁was ▁previously ▁CE O , ▁chairman , ▁and ▁co - found er ▁of ▁Br ø der bund ▁Software , ▁a ▁major ▁software ▁publishing ▁firm ▁that ▁produced ▁classic ▁titles ▁such ▁as ▁The ▁Print ▁Sh op , ▁Where ▁in ▁the ▁World ▁Is ▁Car men ▁Sand iego ?, ▁Prince ▁of ▁Pers ia , ▁and ▁Myst . ▁Br ø der bund ▁was ▁acquired ▁by ▁The ▁Learning ▁Company ▁in ▁ 1 9 9 8 ▁for ▁$ 4 2 0 ▁million , ▁and ▁the ▁combined ▁company ▁was ▁sold ▁to ▁Matt el ▁for ▁$ 3 . 6 ▁billion . ▁ ▁Biography ▁Carl ston ▁received ▁his ▁b ach elor ' s ▁degree ▁from ▁Harvard ▁University ▁in ▁ 1 9 7 0 ▁and ▁also ▁studied ▁econom ics ▁at ▁the ▁Joh ns ▁Hop kins ▁School ▁of ▁Advanced ▁International ▁Studies . ▁He ▁earned ▁a ▁J . D . ▁from ▁Harvard ▁Law ▁School ▁in ▁ 1 9 7 5 . ▁ ▁Prior ▁to ▁found ing ▁Br ø der bund ▁in ▁ 1 9 8 0 , ▁he ▁was ▁an ▁att orney . ▁▁▁ ▁As ▁of ▁April ▁ 2 0 0 8 , ▁he ▁serves ▁as ▁Chair man ▁of ▁the ▁Board ▁of ▁Direct ors ▁of ▁Public ▁Radio ▁International ▁( PRI ) ▁and ▁of ▁the ▁Carl ston ▁Family ▁Foundation ▁( former ly ▁the ▁Br ø der bund ▁Foundation ), ▁and ▁serves ▁on ▁the ▁Bo ards ▁of ▁the ▁Move On ▁Political ▁Action ▁Committee , ▁the ▁Pl ough sh ares ▁Fund , ▁the ▁Alban ian ▁American ▁Enter prise ▁Fund , ▁A . H . ▁Bel o ▁Corporation ▁and