102 Free Images of William Healey Dall

Report of a geological survey of Wisconsin, Iowa, and Minnesota - and incidentally of a portion of Nebraska Territory - made under instructions from the United States Treasury Department (1852) (14564921500)
report of a geological survey of wisconsin, iowa, and minnesota
Report of a geological survey of Wisconsin, Iowa, and Minnesota - and incidentally of a portion of Nebraska Territory - made under instructions from the United States Treasury Department (1852) (14565108587)
report of a geological survey of wisconsin, iowa, and minnesotastratigraphic columns of the united states
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