Wikipedia:WikiProject U.S. Roads/Oklahoma/1920s numbering

Numbers were assigned by 1919, but they were in flux for the first several years. The next map available is 1924. The last map before State Highway numbers were removed from U.S. Highways is 1929.

State Highway 1, Fort Smith, AR to Goldwater, KS
- Now US-64, US-412, SH-99, SH-51, US-177, US-64, SH-164, SH-74, US-64, SH-34
State Highway 2, Caldwell, KS to Ringgold, TX
- Now US-81
State Highway 3, Fort Smith, AR to TX west of Texola
- Now US-271, US-270, SH-3E, SH-270, US-62, US-66
State Highway 4, Arkansas City, KS to Gainesville, TX
- Now US-77, SH-156, US-77
State Highway 5, AR at Ultima Thule to Vernon, TX
- Now US-70, US-177, SH-199, US-70, US-81, SH-53, SH-5, US-183
State Highway 6, Chetopa, KS to Denison, TX
- Now US-59, SH-2, US-69, SH-16, US-69
State Highway 7, KS north of Picher to near Dodson, TX
- Now US-69, US-66, US-62, US-277, US-62
State Highway 8, Kiowa, KS to Burkburnett, TX
- Now SH-8, US-281
State Highway 9, Spiro to TX west of Mangum
- Now SH-9, SH-2, US-266, US-62, SH-9
State Highway 10, Miami to Paris, TX
- Now SH-10, US-59, SH-10, US-62, SH-10, US-64, SH-2, SH-9, US-271
State Highway 11, Siloam Springs, AR to NM west of Kenton
- Now US-412, SH-11, US-60, US-64, SH-325
State Highway 12, Caney, KS to Denison, TX
- Now US-75, SH-1, US-177, US-70, SH-70A
State Highway 13, Enid to TX west of Arnett
- Now US-60, SH-58, US-60
State Highway 14, Buffalo to Vernon, TX
- Now E0130, N1950, N1940, N1920, SH-34, US-60, US-183
State Highway 15, Kiowa, KS to west of Arnett
- Now SH-8, SH-11, US-281, US-412, SH-15, US-283
State Highway 16, KS to Tulsa
- Now US-169, US-412
State Highway 17, Siloam Springs, AR to Sallisaw
- Now US-59
State Highway 18, Burbank to Sulphur
- Now SH-18, US-177
State Highway 19, Stratford to Antlers
- Now SH-19, SH-3W, SH-3, US-75, SH-3
State Highway 20, Claremore to AR
- Now SH-20
State Highway 21, AR to AR
- Now SH-4 (East), US-259, SH-3
State Highway 22, Durant to Davis
- Now SH-78, SH-22(second intersection with SH-78), SH-1, SH-7
State Highway 23, Wister to Mena, AR
- Now US-270
State Highway 24, TX to Frederick
- Now SH-33, US-283, SH-5(Western Section)
State Highway 25, MO to Bills Corner
- Now SH-25, SH-10, US-59, US-60, SH-99, US-64
State Highway 26, Three Sands to KS
- Now US-77, US-177
State Highway 27, Okmulgee to Muskogee
- Now US-62
State Highway 28, Chelsea to SH 25 east of Nowata
- Now SH-28
State Highway 29, Lawton to Wilson
- Now SH-7, SH-76
State Highway 30, Cleveland to Keystone
- Now US-64
State Highway 31, Whitefield to Crowder
- Now SH-9, SH-71, SH-31, Blocker Rd, Avenue E, Avenue B, Nale Rd
State Highway 32, Walters to Waurika
- Now SH-5
State Highway 33, Olton to Seiling
- Now SH-99, SH-33, US-270
State Highway 34, Calvin to Coalgate
- Now US-75
State Highway 35, Elgin to Sterling
- Now SH-17
State Highway 36, SH 8 west of Randlett to Geronimo
- Now SH-36
State Highway 37, Blanchard to Tecumseh

Now SH-9

State Highway 38, Boise City to KS

Now SH-3/US-287/US-385

Where was SH 39?

State Highway 40, Shawnee to Purcell

Now US-177

State Highway 41, Sayre to Minco

Now SH-152

State Highway 42, Forgan to Beaver

Now US-270

State Highway 43, Quinton to Panama

Now SH-31

State Highway 44, Cedar Valley to Crescent

Now SH-74

State Highway 45, SH-15 east of Waynoka to Carmen

Now SH-45

State Highway 46, TX at Texhoma to KS near Tyrone

Now US-54

State Highway 47, Ringwood to Quinlan

Now US-60, US-412

State Highway 48, Ada to Prague

Now SH-99/US-377

Auto trails that match a number (some from [1]; also [2])

Albert Pike Highway: 1
Meridian Highway: 2
Postal Highway: 3
Kansas-Oklahoma-Texas Highway: 4
Lee Highway/Bankhead Highway: 5
King of Trails/Jefferson Highway: 6
Ozark Trails: 7; west half of 9 (also Kansas City, Fort Scott, Tulsa Short Line on east half of 7)
Combination of Air Line Highway and Robertson Highway: east half of 9
Choctaw Trail: south half of 10
White River Trail: 11
Star Highway: 14
Pacific Highway: 46