Item 6358 - Fort Knox, Penobscot River, 1891 Item 6358 - Fort Knox, Penobscot River, 1891 Contributed by Maine Historical Society Item 6358 Zoom 4600px x 3050px - 15.3"w x 10.2"h @ 300dpi | Need a larger size? *Credit line must read: Collections of Maine Historical Society Image Info Fort Knox was begun in 1844 of offer protection to the Penobscot River area following the Northeast Boundary dispute with Britain. This half-tone photo-etched illustration comes from the book Pine Tree Coast by Samuel Adams Drake (Boston: Estes & Laurent, 189) p. 266. Show Details