Rob Strand traced a schematic of the tan USA-built Ross Distortion from my photos,
and a schematic of the black Ross Distortion that was later manufactured in Taiwan.
Will Percival contributed a PCB layout for the Ross Distortion (PDF, 45k)
Gilles Caron also traced out a schematic from my photos.
Visit his site for the schematic, photos, and sound clips.
How to easily remove the knobs of Ross effect pedals