Keywords: Permanent pumping shaft at Sudbrook (Walker 1888).jpg Permanent pumping shaft at Sudbrook shewing curbs before being bricked Original Thomas A Walker 1888 The Severn Tunnel Facing page 88 <br>Scan Internet Archive http //www archive org/details/severntunnelits01walkgoog 1888 Thomas A Walker PD-old-100 Scans from Walker 1888 the Severn Tunnel |