THE DEVELOPMENT OF THE SAULT STE. MARIE CANAL. BY WILLIAM GILBERT IRWIN. and Henry P. Baldwin as sureties for the construction MAKING FIFTY-TON ANCHOR CHAINS. BY DAY ALLEN WILLEY., scientific american, 1902-06-21
THE DEVELOPMENT OF THE SAULT STE. MARIE CANAL. BY WILLIAM GILBERT IRWIN. and Henry P. Baldwin as sureties for the construction MAKING FIFTY-TON ANCHOR CHAINS. BY DAY ALLEN WILLEY., scientific american, 1902-06-21
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