British Transport Commission: British Waterways
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South Western Division
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Severn District
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Gloucester and Sharpness Canal
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Gloucester Docks
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Locks and gates
BW177/5/16/7/1/3/1
"Reconstruction Sellars Swing Bridge - G. And S. Canal. Centre Pivot Modification Detail"
Endorsed "Centre Pivot Modification - Sellars Bridge 1958".
October 1957
BW177/5/16/7/1/3/1
1 sheet