This article identifies externally available timelines related to the exploration of the Arctic.
This site’s timeline: Arctic Exploration Timeline
A number of timelines are available online:
Amanda Graham’s Circumpolar History Timelines: http://ycdl4.yukoncollege.yk.ca/~agraham//nost202/timetables.htm is a large, comprehensive timeline with a large amount of additional detail and organised by territory: North American, Northern Europe & Russia.
Richard Vaughan’s books are also good reference sources:
Early voyages to Siberia and North-East Passage are detailed in A Chronological History of North-Eastern Voyages of Discovery
A short, readable summary of Arctic exploration can be found on Russell Potter’s website Arctic Exploration
A chronology of expeditions is included in the maps available from the Canadian Arctic Exploration Voyages website.
A timeline and description of the main voyages of discovery in Northern Canada / North-West Passage is available at the Northern Research Portal at the University of Saskatchewan