Fotogrāfija 1: Frederic BESSBOROUGH (Earl of) presiding plenary in May 1973.
Fotogrāfija 2: Lucien HARMEGNIES in plenary in May 1973.
Fotogrāfija 3: Maurits DEWULF presiding plenary in May 1973.
Fotogrāfija 4: Maurits DEWULF presiding plenary in May 1973.