Geologische Overzichtskaart van den Nederlandsch Oost-Indischen Archipel (Nederlandsch Nieuw-Guinea)
[Batavia]: 1927. Color map, mounted on silk and affixed to wooden rollers.
Unusual geological map of part of the southern coast of Western New Guinea.
An explorer, geologist and cartographer in the service of the Dutch Geological Survey in Indonesia, Zwierzycki spent nearly a quarter century in the region. The present map includes Dolok, as well as the Papua, Indonesia coast from Saibai Island to near present day Agats.