Japan Exposures has recently posted this interesting short documentary video on Bronica cameras that film fans should enjoy- In the introduction Dirk Rösler explains:
In 2010 I met up with Tony Hilton, the author of the book “Bronica: The Early History and Definitive Collector’s Guide”. Tony and I went to a place in north-west Tokyo called Kami-Itabashi, trying to find remaining traces of Zenzaburo Yoshino’s camera company.