On 10 Jan 2010 at 15:08, Fred Cisin wrote:
  The only 67.5 TPI drive that I have is an Epson.  Who
else made them? 
Sony had at least one half-height single-sided 600 RPM 40 cylinder
drive.  I used to have a few (0AD or something like that).  26 pin
connector on the rear.  I think they were used on the Preis CP/M box.
--Chuck