RRArtilleryAnchorages.jpg
US War Department
en
RRArtilleryAnchorages, Diagram showing the methods of anchoring railroad guns in place
commons
en
RRArtilleryAnchorages, Drawings of railway artillery
commons
ja
RRArtilleryAnchorages、鉄道銃を固定する方法を示す図
commons_translated
ja
RRArtilleryAnchorages、鉄道砲の描画
commons_translated