Recherche dans la collection - Progress plan of works carrying on at Ste Hélène's September 4th 1823. E.W. Durnford, Lt. Col., Commg Rl Engr Canada. (Signed) Saml Romilly, Capt. Rol Engr. (Signed) George Phillpotts, Lieut. Royal Engrs. [architectural drawing]

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