Drawing of Curzon Street Station, Birmingham (London & Birmingham Railway), showing arrangement and details of new roof for locomotive engine house (roundhouse), section of roof over entrance, plan of principate, side elevation one bay with the state boarding removed, plan of entrance showing roof, elevation of one window showing ventilator, section and plan of ventilator, signed by Joseph Geo. Branson, Edwin Gwythen and Robert B. Dochray and another