Major League Baseball Profiles, 1871-1900, is now available for pre-order from Amazon.com, as well as other fine book retailers. I happen to have my copy already and would recommend that you take advantage of Amazon's pre-order deal to get a great price on what is really a fantastic reference book. If you're interested in the history of 19th century baseball (and, since you're here reading this, I imagine that you are), you'll love it.
While I had a very small role in writing this thing, the vast majority of the credit for what should become one of the standard baseball history reference books goes to David Nemec, who put the project together and did most of the work. David did a great job with this thing and I'm impressed and happy with how it turned out.
Word on the street is that there will be a third volume out sometime next year and that volume will have an entry on Packy Dillon, which pleases me to no end. But you really shouldn't wait till then to get your copy of the first two volumes. Get 'em now while supplies last.