yeah go to
www.Yoshinkan.com and youll find some info pluse lots of Yoshinkan links with more info.
www.Aikidojournal.com has a artical on him that you dont need to subscibe for. also Aikido FAQ has some info. your best bet would be to go to a search engine like
www.webcrawler.com and look under Yoshinkan or yoshinkan aikido or Gozo Shioda. and Enlish translation on his biography is underway ( to be a book) just needs a publisher. happy hunting
there is no try there is do or do not