http://nla.gov.au/nla.news-article13484259 The Sydney Morning Herald Tuesday 24 May 1881  Page 6 of 10 THE NEWCASTLE FORTIFICATIONS. (BY OUR SPECIAL REPORTER.) On Saturday last Colonel P. H. Scratchley, R.E., C.M.G., and Colonel C. F. Roberts, visited Newcastle for the purpose of inspecting the hill known as Signal Hill, near Nobby’s, upon which the fort recommended by … More The Newcastle Fortifications – SMH 24 May 1881