This is a limited edition (number 500 of 1,000) of "The Unfortified Boundary: A Diary of the First Survey of the Canadian Boundary Line from 1817 to 1828" by Major Joseph Delafield. Edited by Robert McElroy and Thomas Riggs, this 1943 privately printed book offers a detailed account of early American-Canadian boundary surveys. The book is in very good condition with intact pages and binding.