History Jordan. Umm Qais (Gadara). Image from the Rami Khouri Collection at ACOR. 50 Years in Jordan Established in 1968, ACOR has now been in operation for over a half century. Click here to view celebratory publications associated with our 50th anniversary milestone. Founding Members Since 1968, we have benefitted from the leadership and support of dedicated staff, board members, and academics. Please click here to view a list of our founding members.