Abdou Diof, Ahmadou Ahidjo, Daniel Arap Moi and Major João Bernardo Vieira

From Left: Senegal President Abdou Diouf, Cameroon President Ahmadou Ahidjo, Kenya President Daniel Arap Moi and President of Guinea - Bissau Major João Bernardo Vieira during the Organisation of African Unity (OAU) Heads of State meeting in Nairobi. Kenya's renowned photojournalist Mohamed Amin, also known as 'Six Camera Mo' captured some of Africa's defining moments and photographed almost every African leader in the 20th century.