Departement Publieke WerkenPublieke Werke Dept.Wierda, Sytze Wopkes, 1839-19112014-08-262014-08-2618982014-08-26http://hdl.handle.net/2263/41735Digitised version of National Archive file S.3/618. Sketch plan of the Potchefstroom PrisonSketch planPDF, JPEGNational Archives; Digital rights: University of PretoriaPrisonPotchefstroomPlan or blueprint