1: 48 vertical and horizontal section sketches of "Hong Kong Devil's Peak, 2-6" B.L. Gun Battery, Details of No. 1 Emplacement - Gough Battery" chopped by the Inspector General of Fortifications dated 28.5.70 with a Public Record Office reference WO78/4140 RP3578
(Hong Kong PRO control no. MM-0469)
1: 48 vertical and horizontal section sketches of "Hong Kong Devil's Peak, 2-6" B.L. Gun Battery, Details of No. 2 Emplacement - Gough Battery" chopped by the Inspector General of Fortifications dated 28.5.70 with a Public Record Office reference WO78/4140 RP3578
(Hong Kong PRO control no. MM-0470)
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