The possibility of approaching the North Pole asserted

Eitemau Tebyg

• The North West passage. Being the record of a voyage of exploration of the ship Gjöa 1903, 1907
  gan: Amundsen, Roald, et al.
  Cyhoeddwyd: (1908)
• A brief narrative of an unsuccessful attempt to reach Repulse bay, through Sir Thomas Rowe's Welcome, in His Majesty's Ship Griper, in the year MDCCCXXIV
  gan: Lyon, George F.
  Cyhoeddwyd: (1824)
• The siege and conquest of the North Pole
  gan: Bryce, George
  Cyhoeddwyd: (1910)
• The last of the arctic voyages; being a narrative of the expedition in H. M. S. Assistance, under the command of Captain Edward Belcher, C. B., in search of Sir John Franklin, during the years 1852, 53, 54. With notes on natural history, by Sir John Richarson, Professor Owen, Thomas Bell, J. W. Salter, and Lovell Reeve
  gan: Richardson, John, et al.
  Cyhoeddwyd: (1855)
• Voyages of discovery and research within the artic regions, from the year 1818 to the present time: Under the command of the several naval officers employed by sea and land in search of a north west passage from the Atlantic to the Pacific; with two attemps to reach the North Pole. Abridged and arranged from the official narratives, with occasional remarks
  gan: Barrow, John
  Cyhoeddwyd: (1846)