http://www.okamotocorp.co.jp/english/okamoto_story/history/01.html
The Okamoto Corp would appear to be a major manufacturer of socks in Japan. They have both an English and Japanese site. I found it somewhat convoluted when I went to the website root and tried to open the link above, but I discovered the link above in an unrelated search. There is quite a bit of history about the samurai and clothing.
Best regards,
Barry Thomas
(Melbourne, Australia)
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