Barra Castle: Ground plan 'Barra Castle, Old Meldrum, ground plan'. Heavily annotated and signed William Douglas Simpson, 20th September 1959. On reverse: 'MacG & R [MacGibbon and Ross] 225. The scale has been scored out. Note on the date, MacGibbon and Ross worked together in the late 19th century. Simpson may have modified their drawing to suit a particular purpose in 1959. 20th Century