They knew only two copies of the poster in the public domain, until a collection of about 15 original were exposed in the television show Antiques Roadshow in 2012 by the daughter of a former member of the Royal Observer Corps (ROC).
| Graph IRI | Count |
|---|---|
| http://dbkwik.webdatacommons.org | 5 |
![[RDF Data]](/fct/images/sw-rdf-blue.png)
