Trader and Explosives Expert

English version of the memoirs (Ms & Ts), German version of "Memoiren' (Ts) and copies of correspondence. Describes his life as a trader and traveller in Transvaal, Natal and Bechuanaland from 1872-1900 with comments on gold-mining at Pilgrims Rest, initiating roller-skating rinks at Grahamstown and King William's Town, making explosives for the Boers during the War of 1899-1902 and his arrest by the British in 1900. He refers to meetings with Chief Khama, President Kruger and F.C. Selous.

The correspondence is with W.C. Scully about publishing the Memoirs. Also letters from J.P. Snijman to Commandant Joubert, 15 Jan. 1900, introducing Gumpold, and from S. Eloff to Gumpold, 7 May 1908, on the efficiency of his explosive.