Peter Hibbs 2006 - 2019.

Bomb craters (1) (2019)Available at: http://pillbox.org.uk/blog/216701/ Accessed: 17 September 2019

Hibbs notes: Theinformation on this website is intended solely to describe the ongoing researchactivity of The Defence of East Sussex Project; it is not comprehensive or properlypresented. It is therefore NOT suitable as a basis for producing derivativeworks or surveys!

The illustration, however, is supposed to come from a World War II era manual.