However, it was not until the sixth edition (1871–75, 90 maps), edited by August Petermann (1822–78), Hermann Berghaus (1828–1890) and Carl Vogel (1828–1897), that the work reached the high scientific level and the unsurpassed relief Stieler's Atlas is famous for. A seventh edition was issued 1879-82; an eighth 1888-91 (both 95 maps) under the direction of Hermann Berghaus, Vogel and Hermann Habenicht (1844–1917). Although the printing industry had already changed to lithography for some time, some maps in Stieler's Atlas were still reproduced by copper-plate printing on hand presses with hand colouring into the 1890s.