en.wikipedia.org/wiki/Gàidhealtachd - Gaeldom at Wikipedia
en.wikipedia.org/wiki/Scottish_Highlands - Scottish Highlands at Wikipedia
www.bord-na-gaidhlig.org.uk/about-gaelic/history.html - History of Gaelic at Bòrd Gàidhlig na h-Alba
www.cnag.org.uk/munghaidhlig/eachdraidh - History of Gaelic at Comunn na Gàidhlig
www.bookofdeer.co.uk - Book of Deer, the oldest Gaelic book
www.rfs.scotshome.com - Gaelic in Scottish culture and history
www.ibiblio.org/gaelic/celts.html - Who were the Celts?
www.gaelicpsalmsinging.com/history - History of Gaelic psalm-singing
en.wikipedia.org/wiki/Highland_Clearances - The Highland Clearances at Wikipedia
www.bbc.co.uk/history - The Highland Clearances at BBC