Departement Publieke WerkenPublieke Werke Dept.Wierda, Sytze Wopkes, 1839-19112014-08-262014-08-261888-05-312014-08-26http://hdl.handle.net/2263/41714Digitised version of National Archive file S.3/19. Sketch plans of various bridge designs, signed by "S.W. Wierda, De Goewernments Ingenieur Architect"Sketch planPDF, JPEGNational Archives; Digital rights: University of PretoriaBridgesPlan or blueprint