- Blanchet, 1907, pp. 461 foll.).
- In 1900 the oasis of Atar, on the western borders of the territory, was reached by Paul Blanchet, previously known for his researches on ancient Berber remains in Algeria.
- (Blanchet died in Senegal on the 6th of October 1900, a few days after his return from Adrar.) Atar is inhabited by Arab and Berber tribes, and is described as a wretched spot.