Nice analysis over at the Hardball Times of which teams have been historically best (and worst) at each position. For example, Cards have dominated 1st base (Mize, Musial, McGwire, Clark, Pujols), and Yanks of course in Center (Combs, DiMaggio, Mantle, Henderson, Williams). Red Sox get two positions: Left (Ruth, Williams, Yaz, Rice, and Manny), as well as Pitcher (Young, Grove, Clemens, Pedro). The Left Field honors are pretty obvious - and damn that's a collection of hitters - but I never would have guessed Sox also dominated pitching. But it makes sense.
(That analysis was inspired by this article, comparing the Yankees CF's to Red Sox LF's)