Recherche dans la collection - Quebec, C.E. Plan elevations and sections of No. 6 magazine shewing revised system of lightning conductors to accompany item 31 A.E. 1859-60 Fortifications. W.C. Hadden, Col. C.R.E., C.E., 14 Septr. 1858. Correct J.C. C.W. 17-5-59. Wm c., C.W. [architectural drawing]

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