Given that the response has been 'Nil', I will add one to the pot in the hope that there will be others to follow.
1957 Johnny Berry
HT Angle 72.5 ST Angle 73.2 ST 580mm TT 580mm CS 450mm Rake 52mm Drop 72mm
All measurements center to center. CS measured center of BB to center of dropout slot (simplex DO). Angles measured with a digital level. All other measurements taken with Shinwa 610mm Steel Rule, Rake measured from center of steerer to center of front DO axle slot.
Bryant Bainbridge
Portland Orygun