| One of two trading posts established in 1892, Bonesteel was the furthest west community in Gregory County until the 1904 land opening. | |
| Battle of Bonesteel | Before the 1904 land opening, 10,000 hopefuls congregated in the small community. To regain morality in town, vigilantes clashed with reprobates. |  |
| Whetstone Bay | Boat ramp, camping, fishing, beautiful scenery. Site of 2004 and 2006 Lewis and Clark Re-enactments. |  |
| Whetstone Agency | Established up-river from current-day Bonesteel, 1869. Moved in 1871, later renamed Spotted Tail Agency, then Rosebud Agency. | |
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