The history of the Mossi-Dagomba states lying astride the modern border between Ghana and the Volta Republic has for the most part been looked at from the north, from the viewpoint of Mossi tradition. Marc (1909), Delafosse (1912), Tauxier (1917 and 1924), and Delobsom (1932) were all unable to take account of evidence from Mamprussi, Dagomba, and lesser states lying across the frontier in what is now Ghana. Frobenius (1913) had some knowledge of northern Ghana, but only Westermann (1952) was in a position to take account of the Dagomba and Mamprussi traditions published by Tamakloe (1931), Blair (1932), and Rattray (1932).