Clark, William 1770- 1838 See Montana Magazine of History v.5#3 Summer 1954 p.2-9 Pompey's Pillar--landmark with William Clark's signature. Frontier Times v.36#4 Fall 1962 p.14-15 Return journey in 1806. Montana Magazine v.18 #3 Jl 1968 p.8-29 His 1795 and 1797 journals. Bulletin Missouri Historical Societ3 v.25 #9+ Jy 1969 p.27?-295 0
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