This is an interesting article about how secret codes were knitted into things during World War I and II. Several pictures show men as well as women knitting these items.
http://www.atlasobscura.com/articles/knitting-spies-wwi-wwii
Secret Codes
This is an interesting article about how secret codes were knitted into things during World War I and II. Several pictures show men as well as women knitting these items.
http://www.atlasobscura.com/articles/knitting-spies-wwi-wwii
Centre Knitters Guild 