bcs walk behind tractors

my name is bill, and i am contacting you because i got your address from
a letter about a spader conference mentioning the bcs walk behind
tractor and spader attachments. we are now using such a piece of
equipment at our farm. "dancin' roots orgainc farm" in hillsboro, ore. i
am trying to find the bcs homepage, if there is one. we need help with
getting the proper parts.
any direction you may be able to provide would be very helpful.
thank you, peace,