I have scans of the route information used by WWII military pilots to navigate from Great Falls, Montana to Fairbanks Alaska. They are marked "Confidential" because of the war. Anyhow, the information consists of major waypoints, usually large cities, with midpoints between them described.
1. Great Falls, USA to Edmonton, Canada: 431 statute miles, 374 nautical miles. True course 343 degrees, magnetic course 323 degrees.
-- Midpoints: Lethbridge; Calgary; Penhold.
-- "All the major stops on this route are equipped with radio range stations and the route presents no major difficulties to flying..."
2. Edmonton to Fort St. John: 343 statute miles, 298 nautical miles. True course 302 degrees, magnetic course 274 degrees.
-- Midpoints: Grande Prairie (242 statute miles from Edmonton.)
-- "... Emergency landings over this area (midway to Grande Prairie) would be extremely difficult and rescue parties would have considerable difficulty in getting to the site of the landing."
-- "Within the immediate vicinity of Fort St. John, limited cultivation will be observed and a few small communities are situated in the area. On this leg of the route, because of the rolling, hilly and timbered terrain, emergency landings would be difficult to effect safely."
-- Intermediate Fields: "No Intermediate fields are available for the entire distance between Edmonton and Grande Prairie. The only intermediate field available between Grande Prairie and Fort St. John is a flight strip under construction at Dawson Creek."
3. Fort St. John to Whitehorse: 602 statute miles, 523 nautical miles. True course 301 degrees, magnetic course 269 degrees.
-- Midpoints: Fort Nelson; Watson Lake.
-- "From Fort St. John to Fort Nelson, the terrain is chiefly hills, heavily timbered, averaging about 3,500 feet in height, with deep ravines and numerous streams and rivers. The territory is uncultivated and uninhabited with the exception of a few trappers and Indians trading with the Hudson Bay Company at Sikanni. There are few landmarks... emergency landings over this area would be difficult."
-- "Immediately leaving Fort Nelson, the terrains rises rapidly, becoming mountainous with high ranges of the Rocky Mountains plainly visible to the west. The route parallels this range the entire distance to Watson Lake with the average elevation between 7,000 and 8,000 feet above sea level."
-- "For the first fifty miles northwest of Watson Lake, the terrain directly on course is rolling, heavily timbered plateau, averaging an elevation of about 2,500 feet above sea level. As the course proceeds west, the mountains to the south form a horseshoe over the route and rise rapidly to an average elevation of about 8,000 miles above sea level... Wolf Lake provides an excellent landmark for pilots as it is the largest lake in the area on the course."
-- Intermediate Fields: "No intermediate fields are available between Fort St. John and Fort Nelson. Several flight strips are under construction to the west of the route. No intermediate field are available between Fort Nelson and Watson Lake, but several flight strips are under construction along the route. No intermediate fields are available between Watson Lake and Whitehorse except for several flight strips which are under construction."
4. Whitehorse to Fairbanks, Alaska: 486 statute miles, 422 nautical miles. True course 306 degrees, magnetic course 275 degrees.
-- Midpoints: Northway; Big Delta; Tanacross.
-- "The terrain between Whitehorse and Northway, a distance of 265 miles, is generally mountainous with numerous streams and rivers lying across the route. Immediately upon leaving Whitehorse, the terrain rises rapidly to an average elevation of 7,000 feet, making contact flight during adverse weather hazardous. About 70 miles northwest of Whitehorse, the route passes over Aishihik Lake, a long narrow lake easily distinguished by its shape. At the northwest end of the lake it is joined by a small stream with Sekulman Lake, another long lake, lying north and south, also easily identified from the route. Emergency landings could be effected with consequent damage, however, to aircraft in this area, and during freeze-up, flights could be landed safely on the ice. From Aishihik, for the next 75 miles, the route is extremely mountainous with no valleys and the and the average elevation of these mountains is 7,000 feet above sea level. Beyond this, the route crosses Wellesley Lake, which lies in a wide valley, to rolling plateau country with numerous valleys, rolling hills and intermittent mountains averaging 4,000 feet in height. Along the entire route from Whitehorse to Northway, the course parallels the St. Elias Mountains which lie approximately 50 miles to the southwest. These mountains are extremely high and rugged with peaks extending from 10,000 feet to 18,000 feet above sea level. Just prior to reaching Northway, the plateau flattens out into another large bowl with fewer rolling hills but with numerous scattered lakes. Contact flight from this point to Northway can be accomplished safely at low altitudes. The plateau continues in a northwesterly direction beyond Northway for about 40 miles; however, it narrows down into a wide valley and has a few hills rising to an elevation of about 3,000 to 4,000 feet above sea level. Upon reaching George Lake, the country again flattens out into a wide valley; however, the course follows within 20 miles of the Alaska mountain range. The range at this point averages about 8,000 feet in height, some peaks extending up to 9,000 and 10,000 feet above sea level."
-- "At Big Delta, the valley broadens out, although Mt. Hayes, 13,740 feet in height, is only 35 miles south at this point. The terrain in the immediate vicinity of Big Delta is flat and marshy and contact flights at 3,000 feet can safely be made. At Salacher Lake, the valley widens further, and the Alaska Range turns in a westerly direction leaving only a low range of hills to the west and northwest. For the entire distance from Northway to Fairbanks, the route follows closely the course of the Tanana River, which is an excellent landmark for pilots in contact flight. Caution is advised, however, in following the Tanana River with low visibility as frequent bends and turns are prevalent and the river at times approaches dangerously close to the higher mountains to the north."
-- Intermediate Fields: "Intermediate fields are available between Whitehorse and Fairbanks at Northway, Tanacross and Big Delta, and all of these fields are adequate for large aircraft."
Last edited by Skycat on Sun Nov 27, 2016 4:37 pm, edited 1 time in total.