1870: Hotz collection: Two Young Hong Kong women, ca. 1870
1870: Hotz collection: Hong Kong Guangzhou Merchants & Compradore, ca. 1870
1870: Hotz collection: Guangzhou, Kin-Shan ca. 1870
1918: Holland-China Trading Company: portrait Van den Poll at Guangzhou office, 1918
1918: Holland-China Trading Company: Guangzhou (Canton) office, 1918
1918: Holland-China Trading Company: portrait P. Stuyfbergen, manager Guangzhou office, 1918
1937: Wesselingh family archives: figurines showing Eight immortal fairies (Pat Sin Leng), ca 1937
1938: Wesselingh family archives: Huangpu District, Guangzhou, 1938