"CPWG". www.culturalpropertyadvice.gov.uk. Joseph Noel Paton, Study: The Man with the Muck Rake, 1872. Archived from the original on 20 December 2014. Retrieved 7 October 2010.
"CPWG". www.culturalpropertyadvice.gov.uk. Joseph Noel Paton, Study: The Man with the Muck Rake, 1872. Archived from the original on 20 December 2014. Retrieved 7 October 2010.