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Artist's rendition of J.W. King's 1869 IMPROVEMENTS IN MACHINES BY WHICH FISH ARE ENABLED TO SURMOUNT AND PASS DAMS, CASCADES AND OTHER OBSTRUCTIONS IN WATER
"Improvements in Machines By Which Fish Are Enabled to Surmount and Pass Dams, Cascades and Other Obstructions in Water." Patent no.147, filed by J.W. King, 1869
Source: Library and Archives Canada
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