4 illustrated books in total, including: 1 x 2 volumes In the heart of Asia. Ten thousand kilometers on unknown paths, Leipzig: Brockhaus, 1919, ill. original Cardboard cover, 1 x The Escape of the Great Horse, Leipzig: Brockhaus, 1942, orig. Half cloth (cover damaged) as well as 1 x from pole to pole (last set). Through America to the South Pole, Leipzig: Brockhaus, 1912, orig. All linen (soiled), different Signs of age and use
