1925: Netherlands Harbour Works Co.: Blockyard at Hong Kong, ca. 1925
1925: Netherlands Harbour Works Co.: Construction of quaywall at Hong Kong, ca. 1925
1925: Netherlands Harbour Works Co.: Jetty and Cranes at Hong Kong, ca. 1925
1936: Wesselingh family archives: wedding photo Jan and Mieke Wesselingh, The Netherlands, 1936
1937: Wesselingh family archives: figurines showing Eight immortal fairies (Pat Sin Leng), ca 1937
1938: Wesselingh family archives: Xiamen (Amoy) bronze bowl, found 1938
1938: Wesselingh family archives: Xiamen (Amoy) bronze bowl, found 1938
1938: Wesselingh family archives: Huangpu District, Guangzhou, 1938
1938: Wesselingh family archives: Xiamen (Amoy) bronze bowl, found 1938
1953: Boele family archives: Hong Kong, family portrait near Lei Yue Mun Pass, 1953
1953: Wesselingh family archive: dredger "Portugal" in Hong Kong, Causeway Bay Reclamation, 1953
1953: Boele family archives: Hong Kong, dredger and Lei Yue Mun Pass, 1953
1971: Boele family archives: Hong Kong, Kai Tak Airport, 1971
1975: business card Karel Baggerman, Holland Engineering & Trading Co Ltd, Hong Kong