1. Map to illustrate the boundary line established by the Treaty of Washington of the 9th of August 1842 between Her Majestys Colonies of New Brunswick and Canada and the United States of America Maps University Of Minnesota Public content 1842. Relief shown by hachures.; In lower right: "Printed from Stone by Harrison & Co 45 St. Martin's Lane" 35 x 40 centimeters Scale not given General M... Harrison & Co (London).