Collection search - Quebec, Record plan, sections and elevations of defensive guard house and loop-holed wall recently constructed at the salein of King's bastion citadel for the purpose of closing the eastern extremity of the main ditch. Authorized item 10, ordnance A Estimate 1850-51 MB & B order 4th March 1850 E/11. C.O. Streatfield, Lt. Col., CO,g Royal Engineer C.E. 13th November 1851. Goe. Rankin,Lieut, Royal Engineers, August 4th 1851. [architectural drawing]