Collection search - Fort No. 3. Details of double caponier left flank. Traced by D. McKenzie, Sapper R.E. 21-8-67. Approved by D.C.R.E. 18 June 1867. Sd George Harris, Lieut. R.E. Sd J. Fraser, Sergt R.E. 17-6-67. Sd T.L. Gallwey, Col. R.E. 6-7-67. [architectural drawing]

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