Though Petermanns name appears on hundreds of maps, Wagner suggests he stopped drafting maps himself after 1862. The report concerning the Nordenskiöld voyage to the Lena, and the maps of the United States and Australia, suggest this may not be true. Perhaps he no longer designed, constructed and drafted the maps, as he had with the Barth maps, but he most likely continued to play a role in the conception and design of the maps, especially those in his fields of interest.