As a result of this in the late 1950s, Clark's work came to the attention of the Director of Naval History, Rear Admiral Ernest M. Eller at the Naval History Division of the Navy Department (now the Naval Historical Center) and the head of the Early History Branch in that office, Dr. William J. Morgan.
As a result of this event in the late 1950s, Clark's research was brought to the attention of Rear Admiral Ernest M. Eller, Director of Naval History, and Dr. William J. Morgan, head of the Early History Branch at the Navy Department (now the Naval Historical Center).