Numerous books on type have this. Check for example "The Centaur Types." I think "Anatomy of a Typeface" has some too, but I'm travelling so I can't check easily.

T

You can find some in Made With FontFont and in Christopher Burke’s biography of Paul Renner. Thomas is right that there are a few in Anatomy…, but they’re cropped and cleaned-up b&w images of production drawings so they aren’t really good examples. Also, check with Jos Buivenga who might have hi-res versions of the images of his drawings that were used in a recent online profile. It would also be worth sifting through old images of ID, Baseline, etc. for drawings in their profiles of type designers.

yeah i was going to ask a friend if i could borrow his archive of baseline.

thanks guys, ill check out the books mentioned!

I know for a fact that the sites of Underware, Typotheque, KLIM and Joshua Darden (oops, that one is under construction) show (lots of) images of sketches.
Hope this helps.

. . .
Bert Vanderveen BNO