The description on the back of this postcard (all one sentence!) is as follows:
"Here at North Woodstock, N. H., right in the heart of the snowy White Mountains, Ed Clark, an enterprising ex-fur trader, maintains his celebrated Eskimo Sled Dog Ranch where the finest of pure blooded Eskimo Dogs may be seen as well as a wealth of Eskimo implements and other interesting material gathered by Mr. Clark on his many expeditions in the north."
The Fall 2008 Newsletter of the Upper Pemigewasset Historical Society shows some circa 1935 real photo postcards of dogs being used for hauling heavy loads. Other dog teams were used for speed.
The former Eskimo Sled Dog Ranch is now the Clark Trading Post, a popular tourist attraction in Lincoln, N. H. The sled dogs were were replaced by performing black bears which were found to be more profitable. The sled dog era is remembered by an exhibit in the Trading Post's Museum.