Some more documents have been added to the downloads section.  Some are in PDF form, whilst others, such as the maps, are viewable via the links on the page.  It now includes two maps of the Newcastle tramways as well as a very long document showing the Weardale railway in 1929 as a schematic map, white on blue.  A small section was omitted on the drawing but otherwise if makes for a  fascinating record of the route.