[Ott, Adolph] (1873-1953). Album of 24 Gelatin Silver Studio Photographs of Johannesburg, South Africa, Showing Street Views (Pritchard St., Market Square, Commissioner St., Rissik St., Harrison St., Kirk St., and Jeppe’s Town), Jumpers Deep Gold Mine, Robinson Deep Gold Mine, etc. Ca. 1905
Pollard, F.E. Collection of Thirty Original Gelatin Silver Photos of Gold Mines and Refining Plants of the Witwatersrand Gold Fields around Johannesburg. Ca. 1900.