Four Duke of Edinburgh Study Conference delegates chatting at an event, 1968 Album 1330 Unit ID: PIC/21013/18 Date: 1968
Group of five conference delegates having refreshments, 1968 Album 1330 Unit ID: PIC/21013/53 Date: 1968
HRH The Duke of Edinburgh arriving at a conference event, 1968 Album 1330 Unit ID: PIC/21013/39 Date: 1968
HRH The Duke of Edinburgh arriving at conference events, 1, 1968 Album 1330 Unit ID: PIC/21013/42 Date: 1968
HRH The Duke of Edinburgh arriving at conference events, 2, 1968 Album 1330 Unit ID: PIC/21013/43 Date: 1968