Correction to: Palgrave Communications (2017) 3 Article number: 17037 doi:10.1057/palcomms.2017.37; Published 16 May 2017; Updated 30 May 2017

Previously the caption for Figure 3 read “ ‘The Rocking Chair’ (Spellbound #22). Artist and writer unknown”. This has been corrected to “ ‘The Rocking Chair’ (Spellbound #22). Art by Ken Houghton, writer unknown”.

The article has been corrected online.