Callaham selected to Leadership Oklahoma class Posted in: News Leadership Oklahoma recently announced Blake Callaham of Pioneer Telephone Cooperative has been selected to participate in its 34th class. The members of the class were selected from applicants throughout the state. “Leadership Oklahoma is very proud of the 51 people chosen for this year’s program,” Marion Paden, president and CEO of Leadership ...PLEASE LOG IN FOR PREMIUM CONTENT. Our website requires visitors to log in to view the best local news. Not yet a subscriber? Subscribe today!