Posted By:
Adam J. BaxterSome suggestions from my library:
Baseball in Blue & Gray: The National Pastime during the Civil War - George B. Kirsch
Baseball Legends of Brooklyn's Green-Wood Cemetery - Peter J. Nash
Peverelly's National Game - John Freyer/Mark Rucker
Before The Curse: The Glory Days of New England Baseball 1858-1918 - Troy Soos
Always On Sunday: The California Baseball League, 1886-1915 - John E. Spalding
The first three can be found on Amazon for cheap 10-20 dollars.
The Soos book has been out of print for some time and can run you upwards of $100 or more. I was lucky to snag a NM copy on Ebay for $20.
The Spalding book is also out of print. It's very tough to find and procuring a copy that wasn't falling apart (softcover) was a real challenge.