In 1939, Norway’s glaciers were nearing catastrophic collapse. By 1952 they had lost half of their mass, and by 1976 they were all growing.
17 Dec 1939, Page 15 – Harrisburg Sunday Courier
18 Feb 1952 – POLAR ICE THAW INCREASING
Retreat of the Abrekke glacier in Norway before 1946.
The Present Climatic Fluctuation on JSTOR
May 23, 1976, page 56 – The Argus at Newspapers.com
This is consistent with Briffa’s reconstruction, but not with the Hockey Stick