Collection search - Contoured plan of ground round No. III Tower on the Plains of Abraham, Quebec, showing the outline of the projected redoubt to enclose the same. Estimate dated 24th Feby 1841. John Simmons, Lt. Royl. Engrs. Nov 21st 1842. P. Cole. Major, Dist. R Engrs. 29th Nov 1842. [cartographic material]

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