Kleingrothe, Carl Josef (1864-1942). Portfolio with 51 Photogravures of Sumatra, Showing Tobacco and Coffee Industries (Tobacco Plantations of the Deli Company, Arendsburg Tobacco Company, and Others; Fermentations Sheds; Workers Receiving and Sorting Tobacco; Coffee Plantations), the City of Medan (Harbors and Railway Stations, the District of Kesawan, the Sultan’s Palace, Streets), Portraits of Sultans (Deli, Serdang, Siak, Assahan, and Langkat), Portraits of Indonesians (Batak Chief, Batak Women, Klingalese People, Javanese People, Malay People), etc. Ca. 1898.
[O’Vary, Geza Philip] (1887 – after 1946) & [O’Vary, Helene] (ca. 1883 – after 1958). Collection of Three Photo Albums with ca. 416 Original Gelatin Silver Photos, Taken by an American Employee of the Nederlandsche Koloniale Petroleum Maatschappij (Nederlands Colonial Oil Company) During His Work at the Oil Refinery in Soengei-Gerong (Sungai Gerong, South Sumatra) in 1929-1931. Ca. 1929-1931.