"Severn Bridge Railway swing bridge over new canal"
Elevations of end, plan, detail of intermediate cross girder and guide, detail of hangers under longitudinal girders, and elevation of top of girder over pier. Stamped "Great Western Railway Registered No 31156 Engineer's Office Paddington" and "To be returned to Chief Engineer's Plan Office GWR Paddington". Note "Hamilton Windsor Ironworks Limited [?] secretary" and "G Wells Owen".