Wikipedia:WikiProject U.S. Roads/Nebraska/1920s numbers
The main source used here is [1], but some were renumbered in 1926 and it's not always clear where the old ones were. See also [2].
The state highway system was formed on April 19, 1919, but at first a different system was used ([3]). By 1924 the current system was assigned.
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- Nebraska Highway 10: King of Trails, George Washington Memorial Highway, Golden Rod Highway – now US 75 and US 73
- Nebraska Highway 11: George Washington Memorial Highway – now US 75
- Nebraska Highway 12: George Washington Memorial Highway – now US 75
- Nebraska Highway 13: George Washington Memorial Highway − now US 77
- Nebraska Highway 14: Cornhusker Highway – now US 77
- Nebraska Highway 15: Cornhusker Highway – now N-109 and US 77
- Nebraska Highway 17: ? – now N-15
- Nebraska Highway 18: Golden Rod Highway – now US 136, N-4, N-99, N-8 and US 73
- Nebraska Highway 19: Golden Rod Highway – now US 136
- Nebraska Highway 20: ? – now N-2
- Nebraska Highway 21: Omaha-Lincoln-Denver Highway – now US 6
- Nebraska Highway 22: Black Hills Trail – now US 275 and N-64
- Nebraska Highway 23: ? – now N-9 and N-16
- Nebraska Highway 24: ? – now N-1
- Nebraska Highway 25: Meridian Highway – now US 81
- Nebraska Highway 26: Meridian Highway – now US 81
- Nebraska Highway 27: Meridian Highway, Golden Rod Trail – now US 81, N-92 and N-15
- Nebraska Highway 28: ? – now N-91, N-45 and N-32
- Nebraska Highway 29: Meridian Highway – now N-13, N-59, N-121 and US 81
- Nebraska Highway 30: Golden Rod Highway – now US 136
- Nebraska Highway 31: ? – now N-103, N-41 and N-15
- Nebraska Highway 32: Omaha-Lincoln-Denver Highway – now US 6 and N-33
- Nebraska Highway 33: Seward-York-Aurora Highway – now US 34
- Nebraska Highway 34: ? – now N-15
- Nebraska Highway 35: ? – now N-15
- Nebraska Highway 36: Lincoln Highway – now US 30
- Nebraska Highway 37: ? – now N-24, US 275 and N-32
- Nebraska Highway 38: Lincoln Highway – now US 30
- Nebraska Highway 39: Sunflower Trail – now N-14
- Nebraska Highway 40: Omaha-Lincoln-Denver Highway – now US 6
- Nebraska Highway 41: ? – now US 281
- Nebraska Highway 42: Seward-York-Aurora Highway – now US 34
- Nebraska Highway 43: Lincoln Highway – now US 30
- Nebraska Highway 44: Golden Rod Trail – now an unnumbered road
- Nebraska Highway 45: ? – now US 281 and N-22
- Nebraska Highway 46: ? – now N-14
- Nebraska Highway 48: ? – now N-11 and US 281, but mostly unnumbered roads
- Nebraska Highway 49: Grant Highway – now US 281, S-45A, L-45A, US 20, US 275 and a few unnumbered roads
- Nebraska Highway 50: Black Hills Sioux Trail – now N-11 and N-12
- Nebraska Highway 51: Black Hills, Loup River and Omaha Trail – now N-11 and N-12
- Nebraska Highway 52: Golden Rod Highway – now US 136
- Nebraska Highway 53: Omaha-Lincoln-Denver Highway – now US 6 and US 34
- Nebraska Highway 54: Sunflower Trail – now N-10, US 136 and an unnumbered road
- Nebraska Highway 55: ? – now US 183
- Nebraska Highway 56: ? – now US 6 and US 34
- Nebraska Highway 57: ? – now N-18 and N-23
- Nebraska Highway 58: Lincoln Highway – now US 30
- Nebraska Highway 59: Potash Highway – now N-2
- Nebraska Highway 61: ? – now N-58
- Nebraska Highway 62: ? – now US 281
- Nebraska Highway 63: ? – now N-91, US 183
- Nebraska Highway 64: Black Hills, Loup River and Omaha Trail – now US 183
- Nebraska Highway 65: ? – now N-12, US 20, US 183, N-7 and a few unnumbered roads
- Nebraska Highway 66: ? – now an unnumbered road (but close to US 183)
- Nebraska Highway 67: Omaha-Lincoln-Denver Highway – now US 6, US 34, US 283, N-89 and N-46
- Nebraska Highway 68: Highline Highway – now N-23, N-25 and US 6
- Nebraska Highway 69: Omaha-Lincoln-Denver Highway – now US 6
- Nebraska Highway 70: Burlington Highway – now US 34
- Nebraska Highway 71: Lincoln Highway – now US 30
- Nebraska Highway 72: Alfalfa Trail – now N-92 and N-97
- Nebraska Highway 73: Potash Highway – now N-2 and N-92
- Nebraska Highway 74: ? – now N-91
- Nebraska Highway 75: Potash Highway – now N-2
- Nebraska Highway 76: Potash Highway – now N-2
- Nebraska Highway 77: Blue Pole Route – now US 20
- Nebraska Highway 78: Blue Pole Route – now US 20
- Nebraska Highway 79: Grant Highway – now US 20
- Nebraska Highway 80: Black Hills Loup Highway – now US 385
- Nebraska Highway 81: Blue Grass Road – now N-370
- Nebraska Highway 82: Lincoln Highway – now US 30
- Nebraska Highway 83: Lincoln Highway – now US 30 and US 385
- Nebraska Highway 84: Lincoln Highway – now US 30
- Nebraska Highway 85: ? – now US 30, but mostly unnumbered roads
- Nebraska Highway 86: North Platte Valley Highway – now US 26 and N-92
- Nebraska Highway 87: North Platte Valley Highway – now US 26 and N-92
- Nebraska Highway 88: ? – now N-71