National Geographic : 1892 Mar 31
116 Henry Gannett-Mother Maps of the United States. The territory of Alaska is still in the exploration stage. Its condition, as regards our geographic knowledge of its area, is quite similar to that of the Cordilleran region half a century ago. The shore line has been explored and laid down upon charts in its approximate position, and a part of the intricate shore line of southeastern Alaska has been mapped with some accuracy. The interior of the territory has been traversed by a number of expe ditions, and thus a few routes have been surveyed; but far the greater part of the interior is still utterly unknown.
1892 May 15
1892 Feb 19