UNITED STATES SOIL CONSERVATION SERVICE
J. A. LANGLAIS
JAMES H. PATRIC
ONTARIO DEPARTMENT OF CROWN LANDS
R. R. ALLEN
JOHN CRAWFURD
OTTAWA AND GEORGIAN BAY CANAL COMPANY
PASCUAL MADOZ
ROYAL GEOGRAPHICAL SOCIETY
UNITED STATES SOIL CONSERVATION SERVICE
J. A. LANGLAIS
JAMES H. PATRIC
ONTARIO DEPARTMENT OF CROWN LANDS
R. R. ALLEN
JOHN CRAWFURD
OTTAWA AND GEORGIAN BAY CANAL COMPANY
PASCUAL MADOZ
ROYAL GEOGRAPHICAL SOCIETY