From Archive.org, here's a digitized copy of John McGraw's 1913 book, Scientific Baseball. Not shown: a bunch of spit.

Turns out there's a Vimeo account full of this stuff.

What's better than old-timey base-ball guides? How about a Negro Leagues database? We are creating the first comprehensive statistical encyclopedia of the great black baseball teams and leagues...

Here's an amazing find: the 1930 Spalding's Official Base Ball Guide, as digitized and hosted by the Library of Congress. The best part might be the proto-FanGraphs work, but this will take a few...