In this image, Arthur T. Walden stood at the Portland Winter Carnival with his sled dog Chinook. Walden spent time on the Yukon River during the Alaskan Gold Rush, and after moving to New Hampshire assembled his own prize-winning sled dog team. Chinook was the lead dog and a "great-grandson" of Admiral Robert Peary's famous Greenland Husky, Polaris.

Chinook was the first to lead a team of dogs and Walden up Mount Washington.

Chinook was born in 1917 and was lost during an expedition to the Arctic in 1929. In 1920, Walden began breeding Chinook dogs as sled dogs and sold them in teams. Though there were only 12 left by 1982, after the constant shifting of ownership over the kennel. The breed was rescued in the 80s and is now an accepted breed of the American Kennel Club. The Chinook is also the state dog of New Hampshire.

The photograph appeared in the Portland Evening Express on February 11, 1922.