W.G. Collingwood's letters from Iceland : travels in Iceland 1897 by W.G. Collingwood and Jón Stefánsson by W. G. Collingwood. ISBN 9780954674014. Published by R.G. Collingwood Society with the Collingwood Icelandic Pilgrimage 2012 in 2013. Publication and catalogue information, links to buy online and reader comments.