Subtitle: 'The Sahara Desert Track to Timbuktu by Citroën Half Track'. On December 17, 1922, André Citroën sent an expedition of Citroën half tracks or autochenilles to follow the camel tracks across the Sahara desert from Algeria to Timbuktu on the banks of the River Niger. This was the first motorized crossing of the Sahara and took twenty-one days. It permitted the establishment of a land connection between North Africa and the Sudan, at that time extremely isolated, and opened the way for the exploration of the heart of Africa.

This first crossing was the culmination of the long, slow penetration of the Sahara by car and plane between 1910 and 1921. During this time, the courageous drivers and pilots of the French military squadrons based in Algeria and Tunisia explored the dunes of the Grand Erg and Tanezrouft, sometimes losing their lives, but they paved the way for this first, victorious Citroën expedition. Contains 200 photo's, illustrations and maps, 194 pages, English text.