http://www.pillbox-study-group.org.uk/psgwordpress/wp-content/uploads/2012/12/forthenry22.jpg
http://www.pillbox-study-group.org.uk/psgwordpress/wp-content/uploads/2012/12/forthenry21.jpg
http://www.pillbox-study-group.org.uk/psgwordpress/wp-content/uploads/2012/12/forthenry23.jpg
http://www.pillbox-study-group.org.uk/psgwordpress/wp-content/uploads/2012/12/forthenry24.jpg
http://www.pillbox-study-group.org.uk/psgwordpress/wp-content/uploads/2012/12/TYpe-25-plan.png
http://www.pillbox-study-group.org.uk/psgwordpress/wp-content/uploads/2012/12/Type-25-Armco.jpg