HRH The Duke of Edinburgh seated on stage next to a speaker at a podium, 1, 1968 Album 1330 Unit ID: PIC/21013/33 Date: 1968
HRH The Duke of Edinburgh seated on stage next to a speaker at a podium, 2, 1968 Album 1330 Unit ID: PIC/21013/34 Date: 1968
HRH The Duke of Edinburgh speaking at the Study Conference Opening Sessions, 1968 Album 1330 Unit ID: PIC/21013/26 Date: 1968
HRH The Duke of Edinburgh standing at a microphone at the conference, 1968 Album 1330 Unit ID: PIC/21013/38 Date: 1968