QI: how knitting was used as code in WW2? – Telegraph.
During the Second World War the Office of Censorship banned people from posting knitting patterns abroad in case they contained coded messages.
an appendix to pearlofcivilization.net
QI: how knitting was used as code in WW2? – Telegraph.
During the Second World War the Office of Censorship banned people from posting knitting patterns abroad in case they contained coded messages.