http://www.ragwortfacts.com

The Northumberland Moth Report 2008 (pdf)

The Northumberland Moth Report 2009 (pdf)

The Northumberland Moth Report 2010 (pdf)

The Northumberland Moth Report 2011 (pdf)

The Northumberland Moth Report 2012 (pdf)

The Northumberland Moth Report 2013 (pdf)

The Dark Bordered Beauty in Northumberland (pdf)