| 1762 |  | 
| 1803 |  | 
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| 1846 | |  | 4 Feb: 
Brigham Young and 3000 Mormons leave Nauvoo, Illinois on the first leg of their journey, heading for Utah.PBS NPS | 
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| 1847 | |  | 5 Apr: 
Brigham Young leads the first Mormon wagon train bound for Utah on the final leg of their journey.Utah NPS | 
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| 1860 | |  | 3 Apr: 
The Pony Express mail delivery service is established.PX NPX | 
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| 1867 |  | 
| 1872 | |  | 10 Apr: 
Nebraskans plant more than a million trees on the first Arbor Day.LoC ArborDay | 
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| 1877 | |  | 6 May: 
Due to constant harassment by the U. S. Army and a shortage of food, Crazy Horse finally surrenders.ALMCC AHC | 
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|  | |  | 5 Sep: 
Crazy Horse is killed.CHM NPS | 
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| 1913 | |  | 31 Oct: 
The first transcontinental highway, the Lincoln Highway, is dedicated.DOT ILH | 
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| 1917 | |  | 12 Dec: 
Father Flanagan founds Boys Town.BoysTown | 
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| 1954 |  |