Funny you should say that. I've been working on just what you're discussing. However, when you look at the list and see how big it is, the fact that you need a lot of old maps to get them all, and that they changed quite a bit in just a decade, you might understand that it's a very big job. It's kind of like saying "I'd really like the whole genome for that animal sequenced." They just finished the genome sequence for a pig, and it made the national news. In addition, I'm using Photoshop and Illustrator to make all the signs and pole markers for every trail. I'll likely have at least basic pages for each trail.
I'll give an example below of just one of them. Keep in mind that this is data only from the 1925 Rand McNally auto trails atlas. I have to check all my other maps to confirm everything and see if the road changed over the years. Therefore, the following is preliminary.
Theodore Roosevelt International Highway
Maine
Portland (US 302), Highland Lake, North Windham, Raymond, Naples, Bridgton, Fryeburg
New Hampshire
Center Conway (US 302), North Conway, Intervale, Glen, Bartlett, Sawyers River, Mount Carrigain, Crawford House, Fabyan House, Twin Mountain, Bethlehem Junction, Bethlehem, Littleton (NH Route 18)
Vermont
Waterford (VT Route 18 & US 2), St. Johnsbury (US 2), Danville, West Danville, South Cabot, Marshfield, Plainfield, East Montpelier, Montpelier, Middlesex, Waterbury, Jonesville, Richmond, Williston, Burlington (poss. ferry shortcut to Port Kent), Winooski, South Hero, Pearl (ferry at Gordon Landing to Plattsburgh, Route 314)
New York
Plattsburgh (US 9), Valcour, Ausable Chasm, Keeseville (US 9 N), Clintonville, Au Sable Forks, Jay (NY Route 86), Wilmington, Lake Placid, Saranac Lake, Harrietstown, Paul Smiths (NY Route 30), Duane, Malone (US 11), North Bangor, Moira (NY Route 95), Bombay, Hogansburg (NY Route 37), Massena, Waddington, Ogdensburg, Morristown, Hammond, Redwood (Old NY Route 26B), Browns Corners (NY Route 26), Alexandria Bay (NY Route 12), Riverview, Cape Vincent, Chaumont, Watertown (US 11), Adams Center, Adams, Mannsville, Sandy Creek, Pulaski, Union Square (Maple View, NY Route 104), Mexico, Oswego, Southwest Oswego (NY Route 104A), Sterling, Fair Haven, Red Creek, Wolcott (Ridge Road), Wallington, Sodus, Williamson, Webster (NY Route 404), Rochester (NY Route 31), Spencerport, Brockport (NY Route 19), Holley, Albion, Knowlesville, Medina (NY Route 63) Ridgeway (NY Route 104), Hartland, Wrights Corners, Cambria (NY Route 429), Sanborn, Niagara Falls
Ontario
St. Catharines (Old ON Hwy 8, Regional Road 81, King St), Beamsville, Grimsby (Old ON Hwy 8, RR 81, Road 8 ), Hamilton (ON Hwy 2), Brantford, Paris, London, --??--, Wheatley (Talbot Trail, Old ON Hwy 3, Essex Road 34), Leamington, Essex, Maidstone (Talbot Road, ON Hwy 3), Windsor
Michigan
Note: Primarily early M-10 through Michigan
Detroit (Route M-1), Highland Park, Royal Oak, Birmingham, Pontiac, Waterford (US 24 and Holly Rd, Old M-87), Holly (George Hall Rd, Old M-87), Fenton (Fenton Rd, Old US 23), Flint (Saginaw Rd, Old US 10 and 23), Mount Morris (Saginaw Rd/Dixie Hwy, Old US 10 and 23) , Bridgeport (Dixie Hwy/Genesee Ave, Old US 10 and 23), Saginaw (Bay Rd/M-84, Old US 23) Bay City (M-13 or Old Kawakawlin Rd), Kawkawlin (M-13, Old US 23), Pinconning, Standish (US 23), Omer (US 23 and M-65, Old US 23), Twining, Whittemore (M-65 and M-55, both old US 23), Tawas City (US 23), East Tawas, Oscoda (Iosca F41, Old US 23), Lincoln (Iosca F41, to US 23, then west on Spruce Rd, Old US 23), Spruce (Spruce Rd west and north to Werth Rd, Old US 23), Alpena (M-32, Old US 23), Lachine (M-65, Old US 23), Long Rapids, Posen (zig-zag, poss. E Metz Hwy, Leer Rd, Co Rd 638, Petersville or Hagensville Rd, and BUS US 23), Rogers City (M-68, Old US 23), Onaway (M-33, Old US 23), Tower, Legrand, Cheboygan (US 23), Mackinaw City (ferry), St. Ignace (BL-75, Mackinac Trail, and M-123, all Old US 2), Moran (zig-zag to Worth Rd, Old US 2, and US 2), Epoufette (Hiawatha Trail, Old US 2), Rexton (Hiawatha Trail, Old US 2), Garnet, Engadine, Gould City (US 2), Manistique (County Rd 442), Cooks (US 2), Isabella, St. Jacques, Rapid River (US 41), Marquette (County Road 492), Negaunee (BUS 28, Old US 41), Ishpeming (Greenwood St, Old US 41), Humboldt (County Rd 601, Old M-45), Republic (CR 601, M-95), Channing, Sagola (M-69), Crystal Falls (US 2), Iron River (US 2, Federal Forest Highway 16, then Old US 2), Watersmeet (Old US 2), Marenisco (Dunham Rd, Old US 2), Wakefield (US 2), Bessemer, Ironwood (Bus US 2)
Wisconsin
Hurley (US 51, Old US 2, likely Center Dr, then Kimball Dr and Old WI 10), Saxon (Old WI 10 and US 2), Odanah, Ashland (US 2, Old US 2, Co Hwy G), Iron River (US 2 and Old WI 10/Old Hwy 2), Brule (US 2), Maple (Bayfield Rd, Co Rd P), Poplar (US 2), Wentworth (US 2, Co Rds C/E), South Range (Co Rd E, US 2/US 53), Superior (US 53)
Minnesota
Note: Early MN Route 8 through Minnesota
Duluth (US 53), Twig, Martins (defunct, Old Hwy 8 ), Culver, Floodwood (US 2), Island, Wawina, Swan River, Warba, Blackberry, Gunn, Grand Rapids, Cohasset, Deer River, Dumas, Ball Club, Nushka, Bena, Schley, Cass Lake (61 Av, 164 St, 69 Av, Roosevelt Rd), Nymore (MN 197), Bemidji (US 2), Solway (US 2 and Old Jefferson Hwy paths), Shevlin, Bagley (US 2, Co Rd 4/393rd), Lengby (Co Rds 201 and 6), Fosston (Co Rds 31 and 8 ), McIntosh (US 2), Erskine, Mentor (Co Rd 45), Dugdale (MN 32), Delorme (US 2), Crookston, Anglim, Fisher, Sprague, Mallory, Hunt (BUS US 2), East Grand Forks (BUS US 2)
North Dakota
Note: Primarily early ND Route 8 through North Dakota
Grand Forks (ND 297, 17th Ave), Ojata (siding), Emorado, Arvilla (17th and 16th Ave), Larimore (ND 18 and 23rd Ave), McCanna (Co Rd 11/23rd Ave), Niagara (US 2), Petersburg, Michigan, Lakota, Doyon (zig-zag likely through Crary to Ramsey Co Rd 2/48th St), Devils Lake, Grand Harbor (Co Rd 2), Ramsey (Co Rd 2/71st Ave), Penn (Co Rd 2/71st Ave and Co Rd 2), Churchs Ferry (US 2), Leeds (Old Hwy 2, 53rd, 61st, 49th), York (US 2), Knox, Rugby (66th or US 2), Berwick (Berwick Ln and 64th or US 2) Towner (US 2), Denbigh (likely via Center, 60th and 59th or US 2), Granville (US 2), Surrey (US 2, BUS US 2), Minot (BUS US 2, US 2, Co Rd 10/19th Ave), Berthold (US 2, Old Hwy 2 or 408th), Tagus (Old Hwy 2), Palermo (Old Hwy 2, ND 8 ), Stanley (US 2), Ross (US 2, Co Rd 2 or 93rd Ave), Manitou (Co Rd 2), (alt route Purdon, Tioga), Ray (US 2, 118th Ave, 61st), Wheelock (61st, 122nd, 60th, Co Rd 42, Co Rd 6), Spring Brook (Co Rd 6, US 2/US 85), Willston (US 2, Hwy 1804), Trenton, Buford, Ft. Union N.H.S.
Montana
Mondak (Snowden) (MT 327), Lakeside, Bainville (US 2), Culbertson, Brockton, Poplar, Wolf Point, Frazer, Nashua, Glasgow (MT 246, Tampico Rd), Tampico, Vandalia, Hinsdale (US 2, Old Hwy 2), Saco (US 2, Old US Hwy 2), Bowdoin, Malta (US 2, Old US Hwy 2), Dodson (MT 396/Old US 2)), Coburg, Harlem (US 2), Zurich, Chinook (Old Hwy 2, US 2), Havre (US 2), Kremlin, Gildford, Joplin, Chester, Lothair, Galata (Old Hwy 2, US 2), Dunkirk, Shelby (US 2, Wiegand Rd, US 2, Old US 2), Ethridge (US 2, Old US 2, Marias Rd, Refinery Rd), Cadmus (Cut Bank) (US 2), Bombay (Meriwether), Browning, East Glacier Park (shipped by rail, now US 2), Belton (West Glacier) (Belton Stage Rd, Old Hwy 2), Coram (US 2), Columbia Falls (US 2, MT 40, US 93), Whitefish, Olney, Stryker, Fortine, Eureka (US 93, MT 37), Rexford (MT 37), Libby (US 2), Troy, Yakt (?)
Idaho
Moyie Springs on Roosevelt, BUS US 2, US 2), Bonners Ferry (US 2/95, Old US 2), Moravia (Old US 2), Naples (Co Rd 3/Shilo Rd), McArthur (US 2/95), Sandpoint (US 2), Laclede, Priest River
Washington
Newport (US 2, Camden Rd), Camden, Elk (Elk-Chattaroy Rd, Milan-Elk Rd), Milan (Milan Rd, US 2), Colbert (US 2, Market St?), Spokane (US 195, Old US 195), Spangle (Old US 195), Plaza, North Pine, Rosalia (Old US 195, US 195, Old Thornton Hwy), Thornton (Old Thornton Hwy, Klaveano Rd, Cashup Flat Rd, US 195, McMeekin Rd), Steptoe (Scholz Rd and Hume Rd or US 195, US 195), Colfax (US 195), Pullman (US 195 or along tracks), Colton (US 195), Uniontown (US 195, US 95, Old Spiral Hwy?, US 12)
Idaho
Lewiston (US 12)
Washington
Clarkston (US 12), Alpowa, Pataha City, Pomeroy, Dodge, Dayton, Huntsville, Waitsburg, Dixie (US 12, Isaacs Ave?), Walla Walla (WA 125, Plaza Way, Old Milton Hwy, Freewater Hwy/OR 339),
Oregon
Freewater (Main St), Milton (OR 11, York Rd, Water St), Weston (Bannister Rd into Athena), Athena (OR 11), Adams (Wildhorse Rd/Old Hwy 11), Pendleton (Pendleton Hwy/BUS US 30, Old Pendleton River Rd/Co Rd 1300), Echo (Old Pendleton River Rd, , US 395/OR 32), Stanfield (US 395/OR 32), Hermiston, Umatilla (Columbia River Hwy/US 730), Irrigon (Columbia Lane?), Boardman (Columbia River Hwy/US 30), Arlington, Rufus (Biggs-Rufus Hwy), Biggs Junction (Biggs-Rufus Hwy, OR 206, US 30, Mosier-The Dalles Hwy), The Dalles (Mosier-The Dalles Hwy, discont: Old Columbia River Hwy, US 30), Hood River (US 30), Cascade Locks (US 30/Cascade Locks Hwy, US 30), Bonneville (Historic Columbia River Hwy), Warrendale/Dodson (Historic Columbia River Hwy/Crown Point Hwy), Bridal Veil, Troutdale (Historic Columbia River Hwy, Sandy Blvd/Bypass US 30, Burnside St), Portland
