Recherche dans la collection - Plan & section of a powder magazine to contain 8,736 barrels of powder proposed to be erected in Diamond bastion, in the Citadel of Quebec. SC Melhuish, Capt. Rl Engineers Comg Quebec District. E.W. Durnford, Col. Comg Rl Engr, Canada. 4th Nov. 1831. [architectural drawing]