The overnight stops are given as Gibraltar and Kano.
Gao is in what is now Mali,not too far from the legendary Timbuktu.
The mind boggles at what a refuelling stop there must have been like in 1952.
Crewsair apparently packed up before the end of that year and presumably someone else took over.
Gao must have been an important transit point when aircraft range was shorter.It seems to have been used by Sabena between Brussels and the Congo.
H.G.Brackley of Imperial Airways visited Gao in May 1939 while surveying alternative routes to East and South Africa.