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runscott"Baseball 1845-1881" by Preston Orem
"The National Association of Base Ball Players 1857-1870" by Wright
"Nineteenth Century Stars" by SABR
"Nineteenth Century Baseball" (1871-1900) by Wright
If you have all of the above, you are covered from 1845-1900. Barry Sloate lists "collectable" resources in VCBC #3 (Sept,1995) in case you are interested in the expensive stuff; however, some of the rare books are available in reprint form. I especially recommend Spalding's book "America's National Game", which covers history from Spalding's biased viewpoint.
I also recommend picking up reading copies of Reach or Spalding Guides for the years you are interested in - most of them also contain a 'history' section, including stats.