Vol. 25. 1 THE ST. MARY'S FALLS CANAL. Fig. IST. MARY'S FALLS CANALEND VIEW OF LOCK WITH GATES CLOSED. Fig. 2ST. MARY'S FALLS CANALVIEW OF THE MOVABLE DAN. cIAOSED., scientific american, 1885-12-19
Vol. 25. 1 THE ST. MARY'S FALLS CANAL. Fig. IST. MARY'S FALLS CANALEND VIEW OF LOCK WITH GATES CLOSED. Fig. 2ST. MARY'S FALLS CANALVIEW OF THE MOVABLE DAN. cIAOSED., scientific american, 1885-12-19
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