Sketch of the late tertiary history of the upper Missouri River

[1] CALHOUN FHH, 50 US GEOL SURV

[2] CALHOUN FHH, 1906, 50 US GEOL SURV, P35

[3] HARES CJ, UNPUB US GEOL SURVEY

[4] LEONARD AG, 1913, GEOLOGIC MAP N DAKOT

[5] MCCONNELL RG, 1885, CANADA GEOL SURVEY R, V1, P70

[6] TIGHT WG, GEOL SOC AM B, V18

[7] TODD JE, 1914, AM ASSOC ADV SCI PUB, V39, P263

[8] UPHAM W, 1896, US GEOL SURVEY MON, V25, P474

[9] UPHAM W, 1904, AM GEOL, V34, P80

[10] Upham W., 1894, AM GEOL, V14, P235

[1] CALHOUN FHH, 50 US GEOL SURV

[2] CALHOUN FHH, 1906, 50 US GEOL SURV, P35

[3] HARES CJ, UNPUB US GEOL SURVEY

[4] LEONARD AG, 1913, GEOLOGIC MAP N DAKOT

[5] MCCONNELL RG, 1885, CANADA GEOL SURVEY R, V1, P70

[6] TIGHT WG, GEOL SOC AM B, V18

[7] TODD JE, 1914, AM ASSOC ADV SCI PUB, V39, P263

[8] UPHAM W, 1896, US GEOL SURVEY MON, V25, P474

[9] UPHAM W, 1904, AM GEOL, V34, P80

[10] Upham W., 1894, AM GEOL, V14, P235