Fifty years ago National Geographic published this map of Arctic sea ice.
This is the current map from DMI.
There is more ice in the Beaufort and Chukchi Seas now and less in the East Siberian Sea
The 1985 DOE report showed that ice extent in 1971 was about 10% higher than 1960.
Projecting the climatic effects of increasing carbon dioxide
In 1958 the New York Times reported rapidly melting ice and predicted an ice-free Arctic in a generation. They said the ice was two meters thick.
The Changing Face of the Arctic; The Changing Face of the Arctic – The New York Times
The ice is currently about two meters thick.
