Dubé represents the African National Congress. Katjavivi represents the Zimbabwe African People's Union. In addition to Dubé and Katjavivi, the letter is signed by Raymond Kunene, representing the South West African People's Organization.

The letter invites the BRPF to send a representative to the International Preparatory Committee for the Khartoum Conference's meeting in Helsinki. The meeting is to take place 14-15 November 1968, and concerns British policy in South Africa.