Summary of the mineral production of Canada for 1905 Elfric Drew Ingall ; assistant, J. McLeish.Elfric Drew Ingall1906
Summary of the mineral production of Canada for 1904 Elfric Drew Ingall ; assistant, J. McLeish.Elfric Drew Ingall1905
Summary of the mineral production of Canada for 1902 Elfric Drew Ingall ; assistant, J. McLeish.Elfric Drew Ingall1903
Summary of the mineral production of Canada for 1901 Elfric Drew Ingall ; assistant, J. McLeish.Elfric Drew Ingall1902
Summary of the mineral production of Canada for 1903 Elfric Drew Ingall ; assistant, J. McLeish.Elfric Drew Ingall1904
Summary of the mineral production of Canada for 1897 Elfric Drew Ingall ; assistant J. McLeish.Elfric Drew Ingall1898
Summary of the mineral production of Canada for 1898 Elfric Drew Ingall ; assistants Theo. C. Denis, J. McLeish.Elfric Drew Ingall1894
