I remember a packed Pan Am 747SP flight JFK - Roberts Field (Liberia) - Johannesburg in the late 1970s. In 1972 Pan Am also flew to Casablanca, Dakar, Abidjan, Accra, Cotonou, Lagos, Douala, Libreville, Kinshasa, Nairobi and Dar es Salaam. In 1970 also to Rabat and Entebbe (all based on Pan Am "Jet Clipper Route Maps" booklets).