The Danish Ingolf-Expedition - Ingolf (Cruiser) (H. Hagerup, 1908)

The Danish Ingolf-Expedition - Wandel, C. F. 1843 -1930 (H. Hagerup, 1899)

The Danish Ingolf-Expedition - Ingolf (Cruiser) (H. Hagerup, 1913)

The Danish Ingolf-Expedition - Ingolf (Cruiser) (H. Hagerup, 1915)

The Danish Ingolf-Expedition - Ingolf (Cruiser) (H. Hagerup, 1914)