Instead of Adobe Caslon you could use as well Williams Caslon, which is a very well done reinterpretation of Caslon. It is also the Featured Face right now. Williams Caslon. For headers you could use Big Caslon then or Sumner Stone Arepo.

Anyhow depends on how far the medievalness of your book is, have a look at Andron font, which is a fantastic font for everything where you need historical characters/signs/glyphs. Andron. Or the free font focused on medieval, but it only has a roman face, no italics, no bold: Cardo.

>baseball that has a strong medieval undertone.

I'm envisioning a catcher in armor but not much further.

Cheers!

It's sort of a fantasy book based around kids being referred to as "knights" of Arthurian lore... Arthur, Galahad, Lancelot, etc. The round table is mentioned. Not quite armor-wearing baseball players.

I quite like that Andron set. Williams Caslon is nice, too.

Reminds me of freak the mighty

There is also a special variant of Andron whith some ‘retro’ aspect.
And this face comes with, yes, a *strong medieval undertone* ;-)

Cheers, A. St.

Fairfield is a great book font to use with many variations and styles. Very legible.

http://new.myfonts.com/fonts/linotype/fairfield/

But, do check out my new release of 'Contax Pro' if you are looking for a great substitute for 'Helvetica' or 'Univers'.

http://www.fontspring.com/fonts/type-innovations/contax-pro

Cheers!