- Lefroy, John Henry (Sir) (1817-1890) [info]. On the probable number of the native Indian population of British America: From the proceedings of the Canadian Institute. Toronto: Printed by Hugh Scobie, 1853?.
- Physical description: 19 p., tables.; 20 cm.
- Language: English
- Lefroy began his research on his own magnetic surveying expedition by talking to traders and missionaries, then gathered other numbers from published and unpublished sources. While he cast his net over all of British America, some of the text and tables include numbers for Natives of the Canadian prairies.
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