Collection search - Quebec. Sketch of a portion of the ground plan of the bomb proof hospital citadel, shewing the present drainage from the method proposed for improving the same. C.O. Streatfield, Lt. Col. C.R. Engr C.E. 12 Dec. 1850 & 3d July 1851. Jas Grand, Foreman of Works 10th Decr. 1850. [architectural drawing]