A geographical sketch of that part of North America, called Oregon : containing an account of the Indian title;--the nature of a right of sovereignty;--the first discoveries;--the climate and seasons;--face of the country and mountains--natural divisions, physical appearance and soil of each;--forests and vegetable productions; rivers, bays &c.; islands, &c.; animals;--the disposition of the Indians, and the number and situation of their tribes;--together with an essay on the advantages resulting from a settlement of the territory. To which is attached a new map of the country /