It was the tradition in Kano, Northern Nigeria, in the 1940s and early 50s, to welcome visitors with a horn sound played by a Hausa tribesman.
This picture shows that the tradition was adapted to providing Aircraft Arrival information. BOAC started to fly British built Handley-Page aircraft, known as "Hermes", into Nigeria starting about 1950. Ted Jefferies took and processed this picture in (probably) 1951. It provides an interesting visual conjunction of the "New and the Old".
Prior to the trans-Sahara air link, people came on camels, possibly arriving at Sokoto.
See also afpics for more pictures.
Copyright David Jefferies 1999, 2001, 2005.
D.Jefferies@ee.surrey.ac.uk 20th March 2005.