British Transport Commission: Railways Division
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Railways Division: Western Region British Railways
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Dee and Clwyd River Board
BW171/1/5/1
"Dee & Clywd River Board Bala Lake Scheme"
Preliminary drawings, including longitudinal sections, plans and cross sections. Annotated with details of the scheme. Each plan stamped "Engineers Artillery House Artillery Row Westminster SW1."
March-April 1952
BW171/1/5/1
4 sheets