Someone asked me ages ago about Reg Harris's Raleigh track bike. Finally found the book with its specification in. Thought it might be of interest to the list. Frame size 22". Top-tube length 22.5". Down-tube length from centre of bracket to centre of head tube 24.25". Seat-stay length 21". Chain-stay length 17". These are both measured to their point of intersection if projected. Length from bracket to front wheel centre 23.75". Fork rake 1.75". Wheel-base 40.25". Length of head tube from edge to edge 5". Bracket height 10 5/8". Angles 73 parallel. This is from a book called "Cycling Handbook" by A.L.Pullen. There is also a Frejus Super Corsa road frame spec as well. My Hethchins Superb track bike is virtually identical to this specification.
Best wishes and be lucky. Michael Butler Huntingdon UK.