I had also asked about books on frame design on a (classic bike) mail list, and someone recommended The Custom Bicycle by Kolin and de la Rosa. It is a bit dated (1979), and out of print, but you can find copies around.

I did, and started it last night. Spot on! If anyone has read this, and knows of other books of the same ilk, I would love to hear about them.

If you have not read it, it is a good general background on frames and framebuilding (among a few other things). Of particular interest to many could be the interviews with quite a few of the leading framebuilders of the time (1979?).

Cheers...Gary