by Canada. Department of Agriculture. Research Station, Swift Current, Sask

1923

by Canada. Honorary Advisory Council for Scientific and Industrial Research

1925

by National Research Council of Canada

1918

by Canada. Experimental Farm (Beaverlodge, Alta.)

1925

by Canada. Experimental Station, Scott, Sask

1925

by Canada. Experimental Station, Scott, Sask

1922

by Canada. Experimental Station, Scott, Sask

1921

by Canada. Experimental Station, Scott, Saskatchewan

1925

by Canada. Information Canada

1928

by Canada. Department of Agriculture. Experimental Sub-Station (Beaverlodge, Alta.)

1925

by Canada. Department of Agriculture

1922

by Canada. Department of Agriculture

1927