He published the same map of the Arctic and Antarctic as in 1865, but now with Greenland stretching over the Arctic and ending in Wrangel Island close to the Bering Strait. It shows the possible route of the German expedition. The Antarctic map now uses only two colors to delimit the areas covered by James Cook and others. Later in that volume he published two maps of the route sailed by the German expedition. Unfortunately, they discovered a finger of permanent pack ice stretching from the north to approximately 76°, which made progress further North impossible. Since we of course know this only by hindsight we can understand that Petermann was not daunted in his endeavors to reach the North Pole and demonstrate a possible passage to the Pacific Ocean, even when this expedition had partly failed. In 1869 he published a map of the Arctic Ocean North of Wrangel Island with all exploration routes between 1648 and 1867 and a map with sea-temperatures in the Greenland Sea and the Norwegian Sea as observed by the German expedition. And again two maps of the German expedition in Ergänzungsheft 28.