Collection search - Quebec Citadel. Redoubt in north ravelin. Plan to accompany half yearly progress report for the half year ending 31st March 1848. W.R. Ord, Lt. Col., 4 April 1848. Date of original plans 13th Decr 1844. Date of authority for commencing work 9th April 1847 E3557. Drawn by T.A.L. Murray, Lieut. Roy Engr 29th March 1848. [architectural drawing]

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